Heptagrammic antiprism (7/2)
| 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 | |
 | |
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.
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