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Octagrammic crossed-antiprism
Polyhedron with 18 faces / From Wikipedia, the free encyclopedia
In geometry, the octagrammic crossed-antiprism is one in an infinite set of nonconvex antiprisms formed by triangle sides and two regular star polygon caps, in this case two octagrams.
Quick Facts Type, Faces ...
Octagrammic crossed-antiprism | |
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Type | Uniform polyhedron |
Faces | 2 {8/3} 16 {3} |
Edges | 32 |
Vertices | 16 |
Vertex configuration | 8/5.3.3.3 |
Wythoff symbol | |2 2 8/5 |
Schläfli symbol | s{2,16/5} |
Coxeter diagram | ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Symmetry group | D8d, [2+,16],(2*8), order 32 |
Dual polyhedron | Octagrammic concave deltohedron |
Properties | nonconvex |
Vertex figure | |
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