Learning > geometry Edit this page The Geometry Library Topics: Point Vector methods Curve Primitives Curve Collections Sample create methods and IModelJson form Surface Normals Polyface Analytical Data Visualization Polyface Index Pairing PolyfaceBuilder StrokeOptions Triangulation RegionOps class PolyfaceClip class Web Links Points and Vectors Cross Product of Vectors Dot Product of Vectors Triple Product of Vectors Transformations Rotation Matrix Last Updated: 15 June, 2021