Double Rhombic Icosahedron

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This Demonstration shows the structure of the double rhombic icosahedron. It consists of 10 prolate rhombohedra (on the inside), 10 rhombic dodecahedra of the second kind, 2 rhombic icosahedra, and 10 oblate rhombohedra (on the outside).

Contributed by: Izidor Hafner (January 2012)
Open content licensed under CC BY-NC-SA



The structure of rhombic icosahedron and double rhombic icosahedron was observed by Japanese mathematician Koji Miyazaki in 1977.


[1] W.W. R. Ball and H.M.S. Coxeter, Mathematical Recreations and Essays, 13th ed., New York: Dover, 1987 p. 161.

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