diff --git a/types/three/three-core.d.ts b/types/three/three-core.d.ts
index 6f0051404c..e41eb19212 100755
--- a/types/three/three-core.d.ts
+++ b/types/three/three-core.d.ts
@@ -6689,11 +6689,17 @@ export namespace SceneUtils {
     export function attach(child: Object3D, scene: Scene, parent: Object3D): void;
 }
 
+interface Vec2
+{
+    x: number;
+    y: number;
+}
+
 export namespace ShapeUtils {
-    export function area(contour: number[]): number;
-    export function triangulate(contour: number[], indices: boolean): number[];
-    export function triangulateShape(contour: number[], holes: any[]): number[];
-    export function isClockWise(pts: number[]): boolean;
+    export function area(contour: Vec2[]): number;
+    export function triangulate(contour: Vec2[], indices: boolean): number[];
+    export function triangulateShape(contour: Vec2[], holes: Vec2[]): number[][];
+    export function isClockWise(pts: Vec2[]): boolean;
 }
 
 // Extras / Audio /////////////////////////////////////////////////////////////////////