Infinitesimally Movable Polyhedron with 18 Faces

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This Demonstration shows an infinitesimally movable polyhedron with 18 faces. It is based on a real model consisting of 16 isosceles right triangles and eight equilateral triangles. For each of the two square bases, four isosceles right triangles are used.

Contributed by: Izidor Hafner (April 2014)
Open content licensed under CC BY-NC-SA




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