Decagrammic antiprism
| Decagrammic antiprism | |
|---|---|
 | |
| Type | Uniform polyhedron |
| Faces |
2 Decagrams 20 triangles |
| Edges | 40 |
| Vertices | 20 |
| Vertex configuration | 10/3.3.3.3 |
| Wythoff symbol | |2 2 10/3 |
| Symmetry group | D10d, [2+,20], (2*10), order 40 |
| Dual polyhedron | Decagrammic deltohedron |
| Properties | nonconvex |
| Vertex figure | |
 | |
In geometry, the decagrammic antiprism is one in an infinite set of nonconvex antiprisms formed by triangle sides and two regular star polygon caps, in this case two decagrams.