diff --git a/src/geometry/boundingBox.ts b/src/geometry/boundingBox.ts
index e55c2e555..717716dde 100644
--- a/src/geometry/boundingBox.ts
+++ b/src/geometry/boundingBox.ts
@@ -1,4 +1,5 @@
 import { Point } from "./point";
+import { Polygon } from "./polygon";
 
 /** A simple bounding box defined by 4 coordinates: xMin, yMin, xMax, yMax */
 export class BBox {
@@ -16,4 +17,8 @@ export class BBox {
 }
 
 /** A bounding box defined by 4 points. */
-export type BoundingBox = [Point, Point, Point, Point];
+export class BoundingBox extends Polygon {
+  constructor(topLeft: Point, topRight: Point, bottomRight: Point, bottomLeft: Point) {
+    super(topLeft, topRight, bottomRight, bottomLeft);
+  }
+}
diff --git a/src/geometry/boundingBoxUtils.ts b/src/geometry/boundingBoxUtils.ts
index 66dc17819..4e8e89763 100644
--- a/src/geometry/boundingBoxUtils.ts
+++ b/src/geometry/boundingBoxUtils.ts
@@ -13,12 +13,12 @@ export function getBoundingBox(polygon: Polygon): BoundingBox {
  * Given a BBox, generate the associated bounding box.
  */
 export function getBoundingBoxFromBBox(bbox: BBox): BoundingBox {
-  return [
+  return new BoundingBox(
     [bbox.xMin, bbox.yMin],
     [bbox.xMax, bbox.yMin],
     [bbox.xMax, bbox.yMax],
     [bbox.xMin, bbox.yMax],
-  ];
+  );
 }
 
 /**
diff --git a/src/geometry/polygon.ts b/src/geometry/polygon.ts
index d23f3cf57..29b306fbe 100644
--- a/src/geometry/polygon.ts
+++ b/src/geometry/polygon.ts
@@ -1,4 +1,9 @@
 import { Point } from "./point";
 
 /** A polygon, composed of several Points. */
-export class Polygon extends Array<Point> {}
+export class Polygon extends Array<Point> {
+
+  constructor(...args: Point[]) {
+    super(...args);
+  }
+}
diff --git a/src/parsing/custom/listField.ts b/src/parsing/custom/listField.ts
index c56eba370..f961fa21a 100644
--- a/src/parsing/custom/listField.ts
+++ b/src/parsing/custom/listField.ts
@@ -1,5 +1,5 @@
 import { BaseFieldConstructor } from "../standard";
-import { Polygon, getBoundingBox } from "../../geometry";
+import { Polygon, getBoundingBox, BoundingBox } from "../../geometry";
 import { StringDict } from "../common";
 
 export class ListFieldValue {
@@ -14,12 +14,12 @@ export class ListFieldValue {
    * Contains exactly 4 relative vertices coordinates (points) of a right
    * rectangle containing the word in the document.
    */
-  bbox: Polygon = [];
+  bbox?: BoundingBox;
   /**
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the word in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
   /** The document page on which the information was found. */
   pageId?: number;
 
diff --git a/src/parsing/standard/field.ts b/src/parsing/standard/field.ts
index e9fd85c8c..2fe81230c 100644
--- a/src/parsing/standard/field.ts
+++ b/src/parsing/standard/field.ts
@@ -14,7 +14,7 @@ export class Field extends BaseField {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
   /** The confidence score of the prediction. */
   confidence: number;
 
diff --git a/src/product/billOfLading/billOfLadingV1Carrier.ts b/src/product/billOfLading/billOfLadingV1Carrier.ts
index 73a0247c7..4506be109 100644
--- a/src/product/billOfLading/billOfLadingV1Carrier.ts
+++ b/src/product/billOfLading/billOfLadingV1Carrier.ts
@@ -19,7 +19,7 @@ export class BillOfLadingV1Carrier {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.name = prediction["name"];
diff --git a/src/product/billOfLading/billOfLadingV1CarrierItem.ts b/src/product/billOfLading/billOfLadingV1CarrierItem.ts
index da341951c..045d63ded 100644
--- a/src/product/billOfLading/billOfLadingV1CarrierItem.ts
+++ b/src/product/billOfLading/billOfLadingV1CarrierItem.ts
@@ -26,7 +26,7 @@ export class BillOfLadingV1CarrierItem {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.description = prediction["description"];
diff --git a/src/product/billOfLading/billOfLadingV1Consignee.ts b/src/product/billOfLading/billOfLadingV1Consignee.ts
index 73fbc90b2..5807ca799 100644
--- a/src/product/billOfLading/billOfLadingV1Consignee.ts
+++ b/src/product/billOfLading/billOfLadingV1Consignee.ts
@@ -21,7 +21,7 @@ export class BillOfLadingV1Consignee {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/billOfLading/billOfLadingV1NotifyParty.ts b/src/product/billOfLading/billOfLadingV1NotifyParty.ts
index 8089df3b4..f1dd05d3d 100644
--- a/src/product/billOfLading/billOfLadingV1NotifyParty.ts
+++ b/src/product/billOfLading/billOfLadingV1NotifyParty.ts
@@ -21,7 +21,7 @@ export class BillOfLadingV1NotifyParty {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/billOfLading/billOfLadingV1Shipper.ts b/src/product/billOfLading/billOfLadingV1Shipper.ts
index f5fe11905..de70a1c80 100644
--- a/src/product/billOfLading/billOfLadingV1Shipper.ts
+++ b/src/product/billOfLading/billOfLadingV1Shipper.ts
@@ -21,7 +21,7 @@ export class BillOfLadingV1Shipper {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/financialDocument/financialDocumentV1LineItem.ts b/src/product/financialDocument/financialDocumentV1LineItem.ts
index 762701753..dc5caa642 100644
--- a/src/product/financialDocument/financialDocumentV1LineItem.ts
+++ b/src/product/financialDocument/financialDocumentV1LineItem.ts
@@ -30,7 +30,7 @@ export class FinancialDocumentV1LineItem {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.description = prediction["description"];
diff --git a/src/product/fr/bankAccountDetails/bankAccountDetailsV2Bban.ts b/src/product/fr/bankAccountDetails/bankAccountDetailsV2Bban.ts
index 3f5abc4fc..6f464d633 100644
--- a/src/product/fr/bankAccountDetails/bankAccountDetailsV2Bban.ts
+++ b/src/product/fr/bankAccountDetails/bankAccountDetailsV2Bban.ts
@@ -21,7 +21,7 @@ export class BankAccountDetailsV2Bban {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.bbanBankCode = prediction["bban_bank_code"];
diff --git a/src/product/fr/energyBill/energyBillV1EnergyConsumer.ts b/src/product/fr/energyBill/energyBillV1EnergyConsumer.ts
index cec108fec..ceb202eed 100644
--- a/src/product/fr/energyBill/energyBillV1EnergyConsumer.ts
+++ b/src/product/fr/energyBill/energyBillV1EnergyConsumer.ts
@@ -17,7 +17,7 @@ export class EnergyBillV1EnergyConsumer {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/fr/energyBill/energyBillV1EnergySupplier.ts b/src/product/fr/energyBill/energyBillV1EnergySupplier.ts
index 7da991c7c..badfdf7e8 100644
--- a/src/product/fr/energyBill/energyBillV1EnergySupplier.ts
+++ b/src/product/fr/energyBill/energyBillV1EnergySupplier.ts
@@ -17,7 +17,7 @@ export class EnergyBillV1EnergySupplier {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/fr/energyBill/energyBillV1EnergyUsage.ts b/src/product/fr/energyBill/energyBillV1EnergyUsage.ts
index ced1c9faf..d2e90d2af 100644
--- a/src/product/fr/energyBill/energyBillV1EnergyUsage.ts
+++ b/src/product/fr/energyBill/energyBillV1EnergyUsage.ts
@@ -30,7 +30,7 @@ export class EnergyBillV1EnergyUsage {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/fr/energyBill/energyBillV1MeterDetail.ts b/src/product/fr/energyBill/energyBillV1MeterDetail.ts
index 19f43d11f..db04ab240 100644
--- a/src/product/fr/energyBill/energyBillV1MeterDetail.ts
+++ b/src/product/fr/energyBill/energyBillV1MeterDetail.ts
@@ -19,7 +19,7 @@ export class EnergyBillV1MeterDetail {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.meterNumber = prediction["meter_number"];
diff --git a/src/product/fr/energyBill/energyBillV1Subscription.ts b/src/product/fr/energyBill/energyBillV1Subscription.ts
index 1e3be1be3..43c470ddc 100644
--- a/src/product/fr/energyBill/energyBillV1Subscription.ts
+++ b/src/product/fr/energyBill/energyBillV1Subscription.ts
@@ -26,7 +26,7 @@ export class EnergyBillV1Subscription {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.description = prediction["description"];
diff --git a/src/product/fr/energyBill/energyBillV1TaxesAndContribution.ts b/src/product/fr/energyBill/energyBillV1TaxesAndContribution.ts
index 5ad799451..97b377abf 100644
--- a/src/product/fr/energyBill/energyBillV1TaxesAndContribution.ts
+++ b/src/product/fr/energyBill/energyBillV1TaxesAndContribution.ts
@@ -26,7 +26,7 @@ export class EnergyBillV1TaxesAndContribution {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.description = prediction["description"];
diff --git a/src/product/fr/payslip/payslipV2BankAccountDetail.ts b/src/product/fr/payslip/payslipV2BankAccountDetail.ts
index 4c2d32b0e..033f531be 100644
--- a/src/product/fr/payslip/payslipV2BankAccountDetail.ts
+++ b/src/product/fr/payslip/payslipV2BankAccountDetail.ts
@@ -19,7 +19,7 @@ export class PayslipV2BankAccountDetail {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.bankName = prediction["bank_name"];
diff --git a/src/product/fr/payslip/payslipV2Employee.ts b/src/product/fr/payslip/payslipV2Employee.ts
index bdd9464fa..3c0faf613 100644
--- a/src/product/fr/payslip/payslipV2Employee.ts
+++ b/src/product/fr/payslip/payslipV2Employee.ts
@@ -27,7 +27,7 @@ export class PayslipV2Employee {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/fr/payslip/payslipV2Employer.ts b/src/product/fr/payslip/payslipV2Employer.ts
index 355203fe6..a499595b8 100644
--- a/src/product/fr/payslip/payslipV2Employer.ts
+++ b/src/product/fr/payslip/payslipV2Employer.ts
@@ -27,7 +27,7 @@ export class PayslipV2Employer {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/fr/payslip/payslipV2Employment.ts b/src/product/fr/payslip/payslipV2Employment.ts
index 5120cce38..14dacdc32 100644
--- a/src/product/fr/payslip/payslipV2Employment.ts
+++ b/src/product/fr/payslip/payslipV2Employment.ts
@@ -27,7 +27,7 @@ export class PayslipV2Employment {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.category = prediction["category"];
diff --git a/src/product/fr/payslip/payslipV2PayDetail.ts b/src/product/fr/payslip/payslipV2PayDetail.ts
index cb524a528..c5486b945 100644
--- a/src/product/fr/payslip/payslipV2PayDetail.ts
+++ b/src/product/fr/payslip/payslipV2PayDetail.ts
@@ -35,7 +35,7 @@ export class PayslipV2PayDetail {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/fr/payslip/payslipV2PayPeriod.ts b/src/product/fr/payslip/payslipV2PayPeriod.ts
index b228c3c7f..a1d82acff 100644
--- a/src/product/fr/payslip/payslipV2PayPeriod.ts
+++ b/src/product/fr/payslip/payslipV2PayPeriod.ts
@@ -23,7 +23,7 @@ export class PayslipV2PayPeriod {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.endDate = prediction["end_date"];
diff --git a/src/product/fr/payslip/payslipV2Pto.ts b/src/product/fr/payslip/payslipV2Pto.ts
index f9c31d070..bd604f977 100644
--- a/src/product/fr/payslip/payslipV2Pto.ts
+++ b/src/product/fr/payslip/payslipV2Pto.ts
@@ -21,7 +21,7 @@ export class PayslipV2Pto {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/fr/payslip/payslipV2SalaryDetail.ts b/src/product/fr/payslip/payslipV2SalaryDetail.ts
index 87f8402e1..630bca80b 100644
--- a/src/product/fr/payslip/payslipV2SalaryDetail.ts
+++ b/src/product/fr/payslip/payslipV2SalaryDetail.ts
@@ -22,7 +22,7 @@ export class PayslipV2SalaryDetail {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/fr/payslip/payslipV3BankAccountDetail.ts b/src/product/fr/payslip/payslipV3BankAccountDetail.ts
index 66af8889a..3ec0f2b1c 100644
--- a/src/product/fr/payslip/payslipV3BankAccountDetail.ts
+++ b/src/product/fr/payslip/payslipV3BankAccountDetail.ts
@@ -19,7 +19,7 @@ export class PayslipV3BankAccountDetail {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.bankName = prediction["bank_name"];
diff --git a/src/product/fr/payslip/payslipV3Employee.ts b/src/product/fr/payslip/payslipV3Employee.ts
index 003b9f341..b93f3c7ab 100644
--- a/src/product/fr/payslip/payslipV3Employee.ts
+++ b/src/product/fr/payslip/payslipV3Employee.ts
@@ -27,7 +27,7 @@ export class PayslipV3Employee {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/fr/payslip/payslipV3Employer.ts b/src/product/fr/payslip/payslipV3Employer.ts
index a7dd79677..118dc30c7 100644
--- a/src/product/fr/payslip/payslipV3Employer.ts
+++ b/src/product/fr/payslip/payslipV3Employer.ts
@@ -27,7 +27,7 @@ export class PayslipV3Employer {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.address = prediction["address"];
diff --git a/src/product/fr/payslip/payslipV3Employment.ts b/src/product/fr/payslip/payslipV3Employment.ts
index 89c395709..7b2bf817e 100644
--- a/src/product/fr/payslip/payslipV3Employment.ts
+++ b/src/product/fr/payslip/payslipV3Employment.ts
@@ -27,7 +27,7 @@ export class PayslipV3Employment {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.category = prediction["category"];
diff --git a/src/product/fr/payslip/payslipV3PaidTimeOff.ts b/src/product/fr/payslip/payslipV3PaidTimeOff.ts
index b088f87ee..c8fd1bc28 100644
--- a/src/product/fr/payslip/payslipV3PaidTimeOff.ts
+++ b/src/product/fr/payslip/payslipV3PaidTimeOff.ts
@@ -24,7 +24,7 @@ export class PayslipV3PaidTimeOff {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/fr/payslip/payslipV3PayDetail.ts b/src/product/fr/payslip/payslipV3PayDetail.ts
index 4b50007fd..1dfb45f86 100644
--- a/src/product/fr/payslip/payslipV3PayDetail.ts
+++ b/src/product/fr/payslip/payslipV3PayDetail.ts
@@ -35,7 +35,7 @@ export class PayslipV3PayDetail {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/fr/payslip/payslipV3PayPeriod.ts b/src/product/fr/payslip/payslipV3PayPeriod.ts
index 8fb5b8b31..418308d2f 100644
--- a/src/product/fr/payslip/payslipV3PayPeriod.ts
+++ b/src/product/fr/payslip/payslipV3PayPeriod.ts
@@ -23,7 +23,7 @@ export class PayslipV3PayPeriod {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.endDate = prediction["end_date"];
diff --git a/src/product/fr/payslip/payslipV3SalaryDetail.ts b/src/product/fr/payslip/payslipV3SalaryDetail.ts
index 38f63ddf2..2194467d6 100644
--- a/src/product/fr/payslip/payslipV3SalaryDetail.ts
+++ b/src/product/fr/payslip/payslipV3SalaryDetail.ts
@@ -24,7 +24,7 @@ export class PayslipV3SalaryDetail {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/invoice/invoiceV4LineItem.ts b/src/product/invoice/invoiceV4LineItem.ts
index f7f3d0049..ebfa4a9b5 100644
--- a/src/product/invoice/invoiceV4LineItem.ts
+++ b/src/product/invoice/invoiceV4LineItem.ts
@@ -30,7 +30,7 @@ export class InvoiceV4LineItem {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.description = prediction["description"];
diff --git a/src/product/invoiceSplitter/invoiceSplitterV1InvoicePageGroup.ts b/src/product/invoiceSplitter/invoiceSplitterV1InvoicePageGroup.ts
index 8685098a0..ad99026b8 100644
--- a/src/product/invoiceSplitter/invoiceSplitterV1InvoicePageGroup.ts
+++ b/src/product/invoiceSplitter/invoiceSplitterV1InvoicePageGroup.ts
@@ -15,7 +15,7 @@ export class InvoiceSplitterV1InvoicePageGroup {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.pageIndexes = prediction["page_indexes"];
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1AddedSugar.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1AddedSugar.ts
index b240278b6..1a915c83b 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1AddedSugar.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1AddedSugar.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1AddedSugar {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Calorie.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Calorie.ts
index cd172e47e..e9d800c74 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Calorie.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Calorie.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1Calorie {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Cholesterol.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Cholesterol.ts
index e47a5a4fa..3dac26312 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Cholesterol.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Cholesterol.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1Cholesterol {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1DietaryFiber.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1DietaryFiber.ts
index 5b422f7e2..0c2318bec 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1DietaryFiber.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1DietaryFiber.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1DietaryFiber {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Nutrient.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Nutrient.ts
index cc4c6eea5..fb0522e8e 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Nutrient.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Nutrient.ts
@@ -24,7 +24,7 @@ export class NutritionFactsLabelV1Nutrient {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Protein.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Protein.ts
index f7d903c85..4420d7b3c 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Protein.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Protein.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1Protein {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1SaturatedFat.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1SaturatedFat.ts
index d8465f8c8..c2e18d05e 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1SaturatedFat.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1SaturatedFat.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1SaturatedFat {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1ServingSize.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1ServingSize.ts
index 70e1f4845..bcd7dbc64 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1ServingSize.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1ServingSize.ts
@@ -19,7 +19,7 @@ export class NutritionFactsLabelV1ServingSize {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Sodium.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Sodium.ts
index 08bbcd72e..81416e35f 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1Sodium.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1Sodium.ts
@@ -23,7 +23,7 @@ export class NutritionFactsLabelV1Sodium {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalCarbohydrate.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalCarbohydrate.ts
index 7dc98926d..cbf2358fa 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalCarbohydrate.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalCarbohydrate.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1TotalCarbohydrate {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalFat.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalFat.ts
index ecacce453..e805f5943 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalFat.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalFat.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1TotalFat {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalSugar.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalSugar.ts
index 0023b4a7c..9aacdf540 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalSugar.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1TotalSugar.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1TotalSugar {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/nutritionFactsLabel/nutritionFactsLabelV1TransFat.ts b/src/product/nutritionFactsLabel/nutritionFactsLabelV1TransFat.ts
index 07e833ff9..ddbcc2974 100644
--- a/src/product/nutritionFactsLabel/nutritionFactsLabelV1TransFat.ts
+++ b/src/product/nutritionFactsLabel/nutritionFactsLabelV1TransFat.ts
@@ -21,7 +21,7 @@ export class NutritionFactsLabelV1TransFat {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/receipt/receiptV5LineItem.ts b/src/product/receipt/receiptV5LineItem.ts
index 5940a65e5..7cb6e5c68 100644
--- a/src/product/receipt/receiptV5LineItem.ts
+++ b/src/product/receipt/receiptV5LineItem.ts
@@ -22,7 +22,7 @@ export class ReceiptV5LineItem {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.description = prediction["description"];
diff --git a/src/product/resume/resumeV1Certificate.ts b/src/product/resume/resumeV1Certificate.ts
index 38bf2c3a4..b501ecf41 100644
--- a/src/product/resume/resumeV1Certificate.ts
+++ b/src/product/resume/resumeV1Certificate.ts
@@ -23,7 +23,7 @@ export class ResumeV1Certificate {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.grade = prediction["grade"];
diff --git a/src/product/resume/resumeV1Education.ts b/src/product/resume/resumeV1Education.ts
index c69cfd814..9c7a0bcac 100644
--- a/src/product/resume/resumeV1Education.ts
+++ b/src/product/resume/resumeV1Education.ts
@@ -29,7 +29,7 @@ export class ResumeV1Education {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.degreeDomain = prediction["degree_domain"];
diff --git a/src/product/resume/resumeV1Language.ts b/src/product/resume/resumeV1Language.ts
index 8af9735a0..e008c9e6c 100644
--- a/src/product/resume/resumeV1Language.ts
+++ b/src/product/resume/resumeV1Language.ts
@@ -19,7 +19,7 @@ export class ResumeV1Language {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.language = prediction["language"];
diff --git a/src/product/resume/resumeV1ProfessionalExperience.ts b/src/product/resume/resumeV1ProfessionalExperience.ts
index 0bbafd21c..2d62f8195 100644
--- a/src/product/resume/resumeV1ProfessionalExperience.ts
+++ b/src/product/resume/resumeV1ProfessionalExperience.ts
@@ -33,7 +33,7 @@ export class ResumeV1ProfessionalExperience {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.contractType = prediction["contract_type"];
diff --git a/src/product/resume/resumeV1SocialNetworksUrl.ts b/src/product/resume/resumeV1SocialNetworksUrl.ts
index 516fb59ae..bca348ff9 100644
--- a/src/product/resume/resumeV1SocialNetworksUrl.ts
+++ b/src/product/resume/resumeV1SocialNetworksUrl.ts
@@ -19,7 +19,7 @@ export class ResumeV1SocialNetworksUrl {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.name = prediction["name"];
diff --git a/src/product/us/healthcareCard/healthcareCardV1Copay.ts b/src/product/us/healthcareCard/healthcareCardV1Copay.ts
index ffb487e7a..b2492a0ee 100644
--- a/src/product/us/healthcareCard/healthcareCardV1Copay.ts
+++ b/src/product/us/healthcareCard/healthcareCardV1Copay.ts
@@ -18,7 +18,7 @@ export class HealthcareCardV1Copay {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     if (
diff --git a/src/product/us/usMail/usMailV2RecipientAddress.ts b/src/product/us/usMail/usMailV2RecipientAddress.ts
index 5f6fc9bb7..903b97603 100644
--- a/src/product/us/usMail/usMailV2RecipientAddress.ts
+++ b/src/product/us/usMail/usMailV2RecipientAddress.ts
@@ -29,7 +29,7 @@ export class UsMailV2RecipientAddress {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.city = prediction["city"];
diff --git a/src/product/us/usMail/usMailV2SenderAddress.ts b/src/product/us/usMail/usMailV2SenderAddress.ts
index cef1e81b7..2fbed516c 100644
--- a/src/product/us/usMail/usMailV2SenderAddress.ts
+++ b/src/product/us/usMail/usMailV2SenderAddress.ts
@@ -23,7 +23,7 @@ export class UsMailV2SenderAddress {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.city = prediction["city"];
diff --git a/src/product/us/usMail/usMailV3RecipientAddress.ts b/src/product/us/usMail/usMailV3RecipientAddress.ts
index 80f5c0e30..32b6aee0c 100644
--- a/src/product/us/usMail/usMailV3RecipientAddress.ts
+++ b/src/product/us/usMail/usMailV3RecipientAddress.ts
@@ -31,7 +31,7 @@ export class UsMailV3RecipientAddress {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.city = prediction["city"];
diff --git a/src/product/us/usMail/usMailV3SenderAddress.ts b/src/product/us/usMail/usMailV3SenderAddress.ts
index 4072be969..9567a1eba 100644
--- a/src/product/us/usMail/usMailV3SenderAddress.ts
+++ b/src/product/us/usMail/usMailV3SenderAddress.ts
@@ -23,7 +23,7 @@ export class UsMailV3SenderAddress {
    * Contains the relative vertices coordinates (points) of a polygon containing
    * the field in the document.
    */
-  polygon: Polygon = [];
+  polygon: Polygon = new Polygon();
 
   constructor({ prediction = {} }: StringDict) {
     this.city = prediction["city"];
diff --git a/tests/geometry.spec.ts b/tests/geometry.spec.ts
index 1c0025b54..234a051f8 100644
--- a/tests/geometry.spec.ts
+++ b/tests/geometry.spec.ts
@@ -4,32 +4,32 @@ import { expect } from "chai";
 describe("Geometry functions", () => {
   // 90° rectangle, overlaps polygonB
   function polygonA(): geometry.Polygon {
-    return [
+    return new geometry.Polygon(
       [0.123, 0.53],
       [0.175, 0.53],
       [0.175, 0.546],
       [0.123, 0.546],
-    ];
+    );
   }
 
   // 90° rectangle, overlaps polygonA
   function polygonB(): geometry.Polygon {
-    return [
+    return new geometry.Polygon(
       [0.124, 0.535],
       [0.19, 0.535],
       [0.19, 0.546],
       [0.124, 0.546],
-    ];
+    );
   }
 
   // not 90° rectangle, doesn't overlap any polygons
   function polygonC(): geometry.Polygon {
-    return [
+    return new geometry.Polygon(
       [0.205, 0.407],
       [0.379, 0.407],
       [0.381, 0.43],
       [0.207, 0.43],
-    ];
+    );
   }
 
   it("should get a polygon's bbox", () => {