National Museum of American History
Polyhedron Model by Martin Berman, Elongated Pentagonal Orthocupolarotunda
Berman, Martin · 1970
The faces of this model are seven regular pentagons, fifteen equilateral triangles, and fifteen squares. The top and bottom are pentagons. Five triangles are around the top pentagon. Five pentagons and five triangles are in the ring below this. The next ring has ten squares, and the lowest (adjacent to the bottom pentagon) five triangles.
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