lcheng6 Works

Rotation and Reflectional Symmetry of Regular Polygon

2018-03-20 10:17

Angle between Two Planes (Basic)

2019-10-02 09:21

Right Pyramids Construction

2019-10-09 14:21

DSE2019Q19: Geometric Construction of Circles and Polygons

2020-03-17 15:55