API Reference > geometry-core > CartesianGeometry > Vector3d > angleToXY angleToXY Method Return the (Strongly typed) angle from this vector to vectorB,using only the xy parts. The returned angle can range from negative 180 degrees (negative PI radians) to positive 180 degrees (positive PI radians), not closed on the negative side. Use planarAngleTo, signedAngleTo, angleToXY to take have angle measured in other planes. angleToXY(vectorB: Vector3d): Angle Parameter Type Description vectorB Vector3d target vector of rotation. Returns - Angle Defined in geometry3d/Point3dVector3d.ts Line 1215 Last Updated: 12 June, 2024