Shaky Polyhedra

Simon has been studying various polyhedra and programming them in Wolfram Mathematica. He asked me to help him build one of the many “shaky polyhedra” from paper. The main characteristic of these polyhedra is that they always remain flexible, even if their faces are made of superrigid material. We have made the simplest shaky polyhedron, called Steffen’s polyhedron. If a shaky polytope is 3D or higher, it’s always concave.

Steffen’s polyhedron, a concave polyhedron, the simplest of the so-called “shaky polyhedra”
a different view of our Steffen’s polyhedron
a different view of our Steffen’s polyhedron

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