Spinopentachoric hemiantiprism
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Spinopentachoric hemiantiprism | |
---|---|
File:Spinopentachoric hemiantiprism.png | |
Rank | 5 |
Type | Uniform |
Notation | |
Bowers style acronym | Nophap |
Elements | |
Tera | 20 pentachora, 5 tesseractihemioctachora |
Cells | 40+30 tetrahedra, 10 octahedra |
Faces | 20+60 triangles |
Edges | 20+20 |
Vertices | 10 |
Measures (edge length 1) | |
Circumradius | |
Related polytopes | |
Army | Tac |
Regiment | Tac |
Conjugate | None |
Abstract & topological properties | |
Orientable | No |
Properties | |
Symmetry | A4×2×A1+, order 240 |
Convex | No |
Nature | Wild |
The spinopentachoric hemiantiprism, or nophap, is a uniform hemipolyteron. It has 20 regular pentachora and 5 central tesseractihemioctachora as facets, with 10 pentachora and 4 tesseractihemioctachora at each vertex.
It is a faceting of the triacontaditeron, with pentachoric antiprismatic symmetry. The pentachora of the triacontaditeron are arranged in a 1 5 10 10 5 1 arrangement, with the pentachora of the pentachoric hemiantiprism in the 10 spots.
External links[edit | edit source]
- Bowers, Jonathan. "Category 1: Primary Polytera" (#6).