Heptagrammic antiprism (7/3)
In geometry, the {7⁄3} heptagrammic 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.
Heptagrammic antiprism | |
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Type | Uniform polyhedron |
Faces | 2 Heptagrams 14 triangles |
Edges | 28 |
Vertices | 14 |
Vertex configuration | 7⁄3.3.3.3 |
Wythoff symbol | 2 2 7/3 |
Schläfli symbol | s{2,14/3} sr{2,7/3} |
Coxeter diagram | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Symmetry group | D7d |
Dual polyhedron | Heptagrammic deltohedron |
Properties | nonconvex |
Vertex figure | |
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![](../../I/m/Great_heptagrammic_antiprism.stl.png)
3D model of a (uniform) {7⁄3} heptagrammic antiprism
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