Great dodecahedron
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In geometry, the great dodecahedron is a Kepler–Poinsot polyhedron, with Schläfli symbol {5,5/2} and Coxeter–Dynkin diagram of. It is one of four nonconvex regular polyhedra. It is composed of 12 pentagonal faces, intersecting each other making a... Wikipedia
Elements: F = 12, E = 30; V = 12 (χ = -6)
Faces by sides: 12
Face configuration: V(5⁄2)5
Properties: Regular nonconvex
Schläfli symbol: 5,5⁄2
Symmetry group: Ih, H3,, (*532)
Wythoff symbol: 5⁄2 | 2 5