Octagonal-enneagonal duotegum
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| Octagonal-enneagonal duotegum | |
|---|---|
| Rank | 4 |
| Type | Uniform dual |
| Space | Spherical |
| Notation | |
| Coxeter diagram | m8o2m9o |
| Elements | |
| Cells | 72 digonal disphenoids |
| Faces | 72+72 isosceles triangles |
| Edges | 8+9+72 |
| Vertices | 8+9 |
| Vertex figure | 9 octagonal tegums, 8 enneagonal tegums |
| Measures (edge length 1) | |
| Central density | 1 |
| Related polytopes | |
| Dual | Octagonal-enneagonal duoprism |
| Conjugates | Octagonal-enneagrammic duotegum, Octagonal-great enneagrammic duotegum, Octagrammic-enneagonal duotegum, Octagrammic-enneagrammic duotegum, Octagrammic-great enneagrammic duotegum |
| Abstract & topological properties | |
| Euler characteristic | 0 |
| Orientable | Yes |
| Properties | |
| Symmetry | I2(8)×I2(9), order 288 |
| Convex | Yes |
| Nature | Tame |
The octagonal-enneagonal duotegum, also known as the 8-9 duotegum, is a duotegum that consists of 72 digonal disphenoids and 17 vertices.
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