Compound of twelve pentagonal prisms

This uniform polyhedron compound is a symmetric arrangement of 12 pentagonal prisms, aligned in pairs with the axes of fivefold rotational symmetry of a dodecahedron.

Compound of twelve pentagonal prisms
TypeUniform compound
IndexUC35
Polyhedra12 pentagonal prisms
Faces24 pentagons, 60 squares
Edges180
Vertices60
Symmetry groupicosahedral (Ih)
Subgroup restricting to one constituent5-fold dihedral (D5)

It results from composing the two enantiomorphs of the compound of six pentagonal prisms. In doing so, the vertices of the two enantiomorphs coincide, with the result that the full compound has two pentagonal prisms incident on each of its vertices.

This compound shares its vertex arrangement with four uniform polyhedra as follows:


Nonconvex great rhombicosidodecahedron

Great dodecicosidodecahedron

Great rhombidodecahedron

Truncated great dodecahedron

Compound of six pentagonal prisms

Compound of twelve pentagonal prisms

References

  • Skilling, John (1976), "Uniform Compounds of Uniform Polyhedra", Mathematical Proceedings of the Cambridge Philosophical Society, 79 (03): 447–457, doi:10.1017/S0305004100052440, MR 0397554.


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