Small icosihemidodecahedron
Uniform star polyhedron with 26 faces / From Wikipedia, the free encyclopedia
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In geometry, the small icosihemidodecahedron (or small icosahemidodecahedron) is a uniform star polyhedron, indexed as U49. It has 26 faces (20 triangles and 6 decagons), 60 edges, and 30 vertices.[1] Its vertex figure alternates two regular triangles and decagons as a crossed quadrilateral. It is a hemipolyhedron with its six decagonal faces passing through the model center.
Small icosihemidodecahedron | |
---|---|
Type | Uniform star polyhedron |
Elements | F = 26, E = 60 V = 30 (χ = −4) |
Faces by sides | 20{3}+6{10} |
Coxeter diagram | (double covering) |
Wythoff symbol | 3/2 3 | 5 (double covering) |
Symmetry group | Ih, [5,3], *532 |
Index references | U49, C63, W89 |
Dual polyhedron | Small icosihemidodecacron |
Vertex figure | 3.10.3/2.10 |
Bowers acronym | Seihid |
It is given a Wythoff symbol, 3⁄2 3 | 5, but that construction represents a double covering of this model.