Acronym | dird |
Name |
dirhimbidodecahedron, compound of 12 pip |
© © | |
Circumradius | sqrt[(15+2 sqrt(5))/20] = 0.986715 |
Vertex figure | 2[4^{2},5] |
General of army | f3x5o |
Colonel of regiment | (itself, although not being locally convex) |
External links |
As abstract polytope dird is isomorphic to giddird, thereby replacing pentagons by pentagrams, respectively pip by stip.
Vertices coincide by pairs. So either both can be considered separately (type A) or are identified (type B). Finally, instead of considering individual pip, it can likewise be seen as a compound of 2 (different handed) kred (type C).
(Type A) 120 | 2 1 | 2 1 || 1 -----+--------+-------++--- 2 | 120 * | 1 1 || 1 2 | * 60 | 2 0 || 1 -----+--------+-------++--- 4 | 2 2 | 60 * || 1 5 | 5 0 | * 24 || 1 -----+--------+-------++--- ♦ 10 | 10 5 | 5 2 || 12
(Type B) 60 | 4 2 | 4 2 || 2 -----+--------+-------++--- 2 | 120 * | 1 1 || 1 2 | * 60 | 2 0 || 1 -----+--------+-------++--- 4 | 2 2 | 60 * || 1 5 | 5 0 | * 24 || 1 -----+--------+-------++--- ♦ 10 | 10 5 | 5 2 || 12
(Type C) 120 | 2 1 | 2 1 || 1 -----+--------+-------++-- 2 | 120 * | 1 1 || 1 2 | * 60 | 2 0 || 1 -----+--------+-------++-- 4 | 2 2 | 60 * || 1 5 | 5 0 | * 24 || 1 -----+--------+-------++-- ♦ 60 | 60 30 | 30 12 || 2
© 2004-2021 | top of page |