VARIETY

Pseudosphere and Tractrix

Convexity

Projection of a Cube into a Sphere

The green Cycloidal curve is the fastest glide path from A to B

The Sphere and the Cylinder have the same area, says Lambert and says  Archimedes

Tall cube cutting

2D joint

3D joint

Coordination

The Beginning of a Closest Packing

Soccer ball skeleton a'la Buckminster Fuller

Snail

W. Boy's surface

Boy's surface is not orientable

By Computer?  No, by Cathrine!

By Cathrine? No, by Anders!

Flying

Sunflower

C. Monet : Lunch in the garden

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