API Reference > geometry-core > CartesianGeometry > Angle > isPerpendicularDotSet isPerpendicularDotSet MethodStatic Test if dot product values indicate non-zero length perpendicular vectors. isPerpendicularDotSet(dotUU: number, dotVV: number, dotUV: number): boolean Parameter Type Description dotUU number dot product of vectorU with itself dotVV number dot product of vectorV with itself dotUV number dot product of vectorU with vectorV Returns - boolean Defined in geometry3d/Angle.ts Line 291 Last Updated: 11 June, 2024