API Reference > geometry-core > CartesianGeometry > Vector2d > createOffsetBisector createOffsetBisector MethodStatic Return a vector that bisects the angle between two normals and extends to the intersection of two offset lines createOffsetBisector(unitPerpA: Vector2d, unitPerpB: Vector2d, offset: number): Vector2d | undefined Parameter Type Description unitPerpA Vector2d unit perpendicular to incoming direction unitPerpB Vector2d unit perpendicular to outgoing direction offset number offset distance Returns - Vector2d | undefined Defined in core/geometry/src/geometry3d/Point2dVector2d.ts Line 324 Last Updated: 15 June, 2021