(with extra double-covered triangles) (with extra double-covered pentagons)
Wythoff symbol
3 5/3 (3/2 5/2) |
Symmetry group
Ih, [5,3], *532
Index references
U63, C79, W101
Dual polyhedron
Great dodecicosacron
Vertex figure
6.10/3.6/5.10/7
Bowers acronym
Giddy
In geometry, the great dodecicosahedron (or great dodekicosahedron) is a nonconvex uniform polyhedron, indexed as U63. It has 32 faces (20 hexagons and 12 decagrams), 120 edges, and 60 vertices.[1] Its vertex figure is a crossed quadrilateral.
It has a composite Wythoff symbol, 3 5⁄3 (3⁄25⁄2) |, requiring two different Schwarz triangles to generate it: (3 5⁄33⁄2) and (3 5⁄35⁄2). (3 5⁄33⁄2| represents the great dodecicosahedron with an extra 12 {10⁄2} pentagons, and 3 5⁄35⁄2 | represents it with an extra 20 {6⁄2} triangles.)[2]
Its vertex figure 6.10⁄3.6⁄5.10⁄7 is also ambiguous, having two clockwise and two counterclockwise faces around each vertex.
^Maeder, Roman. "63: great dodecicosahedron". MathConsult.
^Wenninger, Magnus (1974). Polyhedron Models. Cambridge University Press. ISBN 0-521-09859-9. pp. 9–10.
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