Octagrammic antiprism
In geometry, the octagrammic 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.
| Octagrammic antiprism | |
|---|---|
 | |
| Type | Uniform polyhedron |
| Faces | 2 {8/3} 16 {3} |
| Edges | 32 |
| Vertices | 16 |
| Vertex configuration | 8/3.3.3.3 |
| Wythoff symbol | |2 2 8/3 |
| Schläfli symbol | s{2,16/3} |
| Coxeter diagram |       |
| Symmetry group | D8d, [2+,16], (2*8), order 32 |
| Dual polyhedron | Octagrammic deltohedron |
| Properties | nonconvex |
| Vertex figure | |
 | |
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