Small dodecahemidodecahedron

Small dodecahemidodecahedron
TypeUniform star polyhedron
ElementsF = 18, E = 60
V = 30 (χ = 12)
Faces by sides12{5}+6{10}
Wythoff symbol5/4 5 | 5
Symmetry groupIh, [5,3], *532
Index referencesU51, C65, W91
Dual polyhedronSmall dodecahemidodecacron
Vertex figure
5.10.5/4.10
Bowers acronymSidhid

In geometry, the small dodecahemidodecahedron is a nonconvex uniform polyhedron, indexed as U51. Its vertex figure alternates two regular pentagons and decagons as a crossed quadrilateral.

It is a hemipolyhedron with six decagonal faces passing through the model center.

It shares its edge arrangement with the icosidodecahedron (its convex hull, having the pentagonal faces in common), and with the small icosihemidodecahedron (having the decagonal faces in common).


Icosidodecahedron

Small icosihemidodecahedron

Small dodecahemidodecahedron
  • Weisstein, Eric W. "Small dodecahemidodecahedron". MathWorld.
  • Uniform polyhedra and duals
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