Prize substitute
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| Prize substitute | |
|---|---|
 | |
| Rank | 3 |
| Type | Acrohedron |
| Notation | |
| Stewart notation | A5''m-2 |
| Elements | |
| Faces | 2 pentagons, 4 squares, 2+4+4 triangles |
| Edges | 2+2+2+2+4+4+4+4+4 |
| Vertices | 1+1+2+2+2+2+2+2 |
| Abstract & topological properties | |
| Euler characteristic | 2 |
| Orientable | Yes |
| Genus | 0 |
| Properties | |
| Symmetry | K2×I, order 4 |
| Convex | No |
The prize substistute or A5''m-2 is a non-convex polyhedron with regular faces. It is an example of a 5-4-3 acrohedron. It can be made by excavating two ms from A5''. It has the fewest faces of any polyhedron in the cult of the double-ess-five.
Bibliography[edit | edit source]
- Stewart, Bonnie (1964). Adventures Amoung the Toroids (2 ed.). ISBN 0686-119 36-3.