API Reference > geometry-core > CartesianGeometry > PolygonOps > sumTriangleAreasXY sumTriangleAreasXY MethodStatic Sum areas of triangles from points[0] to each far edge. Consider triangles from points[0] to each edge. Sum the areas(absolute, without regard to orientation) all these triangles. sumTriangleAreasXY(points: Point3d[]): number Parameter Type Description points Point3d[] Returns - number sum of absolute triangle areas. Defined in core/geometry/src/geometry3d/PolygonOps.ts Line 251 Last Updated: 13 June, 2024