Compound of twelve pentagrammic antiprisms

This uniform polyhedron compound is a symmetric arrangement of 12 pentagrammic antiprisms, aligned in pairs with the axes of fivefold rotational symmetry of a dodecahedron. It results from composing the two enantiomorphs of the compound of 6 pentagrammic antiprisms.

Compound of twelve pentagrammic antiprisms
TypeUniform compound
IndexUC45
Polyhedra12 pentagrammic antiprisms
Faces120 triangles, 24 pentagrams
Edges240
Vertices120
Symmetry groupicosahedral (Ih)
Subgroup restricting to one constituent5-fold dihedral (D5)

References

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


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