Heptagrammic crossed-antiprism
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Heptagrammic crossed-antiprism | |
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Type | Uniform polyhedron |
Faces | 2 Heptagrams 14 triangles |
Edges | 28 |
Vertices | 14 |
Vertex configuration | 7/4.3.3.3 |
Wythoff symbol | |2 2 7/4 |
Schläfli symbol | sr{2,7/4} |
Coxeter diagram | ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Symmetry group | D7h |
Dual polyhedron | Heptagrammic concave deltohedron |
Properties | nonconvex |
Vertex figure | |
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In geometry, the heptagrammic 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 {7/3} heptagrams.
It differs from the heptagrammic antiprism (7/3) by having opposite orientations on the two heptagrams.
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![]() | Original source: https://en.wikipedia.org/wiki/Heptagrammic crossed-antiprism.
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