Here are some YouTube videos that show what I am doing now.
The first video shows a dynamic triange creating a diamond by moving around. Note the original triangle is appears to be planar but actually is in space as it is two sided, one darker and the other lighter. The movement is actually in 3-space.
dynamic Triangle in motion Press Back to return from YouTube.
The second video shows a spindle (generic 3D polyhedron) driving around a Moebius strip.
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