This is one of the first homework assignments given in Art 1. Shade the geometric solids and practice using them by drawing and shading a robot.
https://docs.google.com/presentation/d/1IYCQJcKWVWplYZeDJKjnx66xWHRrLZiyV6_cy_WvILw/edit#slide=id.p22
No use is allowed without explicit permission from owner