Tri-tridiminished icosahedron
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| Tri-tridiminished icosahedron | |
|---|---|
 | |
| Rank | 3 |
| Notation | |
| Bowers style acronym | Titdi |
| Elements | |
| Faces | 3+3 isosceles triangles, 3 kites |
| Edges | 3+3+3+6 |
| Vertices | 1+1+3+3 |
| Vertex figure | 1+1+3 triangles, 3 pentagons |
| Measures (edge length 1) | |
| Central density | 1 |
| Related polytopes | |
| Army | Titdi |
| Regiment | Titdi |
| Dual | Tridiminished icosahedron |
| Abstract & topological properties | |
| Euler characteristic | 2 |
| Surface | Sphere |
| Orientable | Yes |
| Genus | 0 |
| Properties | |
| Symmetry | A2×I, order 6 |
| Convex | Yes |
| Nature | Tame |
The tri-tridiminished icosahedron, or titdi, is a polyhedron obtained as the dual of the tridiminished icosahedron. It has 3 kites and 3+3 isosceles triangles for faces.
It can be formed from a regular icosahedron by removing 3 sets of 3 vertices, or from a dodecahedron by augmenting 3 non-adjacent faces with tall pyramids.
External links[edit | edit source]
- Klitzing, Richard. "titdi".