Heptagrammic antiprism (7/2)
In geometry, the {7⁄2} 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 {7⁄2} heptagrams.
| Heptagrammic antiprism | |
|---|---|
 | |
| Type | Uniform polyhedron |
| Faces | 2 heptagrams 14 triangles |
| Edges | 28 |
| Vertices | 14 |
| Vertex configuration | 7⁄2.3.3.3 |
| Wythoff symbol | |2 2 7⁄2 |
| Schläfli symbol | sr{2,7⁄2} |
| Coxeter diagram |     |
| Symmetry group | D7h |
| Dual polyhedron | Heptagrammic deltohedron |
| Properties | nonconvex |
| Vertex figure | |
 | |
3D model of a (uniform) {7⁄2} heptagrammic antiprism
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