Two dimensional wireframe geometries are points, lines, and planar curves. 2D wireframe geometry is stored in a sketch, which is represented by the Sketch class (Section 8.202). From a sketch, solids and surfaces can be created.
The creation of a sketch can be divided into three steps:
1. Creating sketch references and sketch objects
2. Creating sketch geometry
3. Creating constraints between the geometric elements in a sketch
5.1 Sketch References and Sketch Objects
A sketch reference is a plane or ...