Compound of twelve pentagrammic prisms

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Compound of twelve pentagrammic prisms
UC37-12 pentagrammic prisms.png
Type Uniform compound
Index UC37
Polyhedra 12 pentagrammic prisms
Faces 24 pentagrams, 60 squares
Edges 180
Vertices 60
Symmetry group icosahedral (Ih)
Subgroup restricting to one constituent 5-fold dihedral (D5)

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

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

Related polyhedra[edit]

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

Small rhombicosidodecahedron.png
Small dodecicosidodecahedron.png
Small dodecicosidodecahedron
Small rhombidodecahedron.png
Small rhombidodecahedron
Small stellated truncated dodecahedron.png
Small stellated truncated dodecahedron
UC36-6 pentagrammic prisms.png
Compound of six pentagrammic prisms
UC37-12 pentagrammic prisms.png
Compound of twelve pentagrammic prisms


  • 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 .