Heptagonal-tetrahedral duotegum
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| Heptagonal-tetrahedral duotegum | |
|---|---|
| Rank | 5 |
| Type | Uniform dual |
| Notation | |
| Coxeter diagram | m7o2m3o3o (     ) |
| Elements | |
| Tera | 28 triangular scalenes |
| Cells | 28 triangular pyramids, 42 digonal disphenoids |
| Faces | 4 triangles, 28+42 isosceles triangles |
| Edges | 6+7+28 |
| Vertices | 4+7 |
| Vertex figure | 7 tetrahedral tegums, 4 triangular-heptagonal duotegums |
| Measures (edge length 1) | |
| Central density | 1 |
| Related polytopes | |
| Dual | Heptagonal-tetrahedral duoprism |
| Abstract & topological properties | |
| Euler characteristic | 2 |
| Orientable | Yes |
| Properties | |
| Symmetry | A3×I2(7), order 336 |
| Convex | Yes |
| Nature | Tame |
The heptagonal-tetrahedral duotegum is an isoteric duotegum that consists of 28 triangular scalenes and 11 vertices.