Rolling Polyhedron and Center of Gravity Plot
This Demonstration shows a polyhedron rolling on a flat surface and plots the path taken by the center of gravity of the polyhedron.[more]
You can select from 195 polyhedra and can use "shape rotation" to rotate your chosen polyhedron around a vertical axis at the start.
The surface plot computes many possible paths for the center of gravity. You can choose the resolution of the surface.[less]