Decayotton

From Wikipedia, the free encyclopedia

Regular decayotton
9-simplex

(Orthographic projection)
Type Regular 9-polytope
Family simplex
8-faces 10 8-simplex
7-faces 45 7-simplex
6-faces 120 6-simplex
5-faces 210 5-simplex
4-faces 252 5-cell
Cells 210 tetrahedron
Faces 120 triangle
Edges 45
Vertices 10
Vertex figure 8-simplex
Schläfli symbol {3,3,3,3,3,3,3,3}
Coxeter-Dynkin diagram Image:CDW_ring.pngImage:CDW_3b.pngImage:CDW_dot.pngImage:CDW_3b.pngImage:CDW_dot.pngImage:CDW_3b.pngImage:CDW_dot.pngImage:CDW_3b.pngImage:CDW_dot.pngImage:CDW_3b.pngImage:CDW_dot.pngImage:CDW_3b.pngImage:CDW_dot.pngImage:CDW_3b.pngImage:CDW_dot.pngImage:CDW_3b.pngImage:CDW_dot.png
Dual Self-dual
Properties convex

A decayotton, or deca-9-tope is a 9-simplex, a self-dual regular 9-polytope with 10 vertices, 45 edges, 120 triangle faces, 210 tetrahedral cells, 252 5-cell 4-faces, 210 5-simplex 5-faces, 120 6-simplex 6-faces, 45 7-simplex 7-faces, and 10 8-simplex 8-faces.

The name decayotton is derived from deca for ten facets in Greek and -yott for eight, having 8-dimensional facets, and -on.

[edit] See also

[edit] External links