Acronym | sirsei |
Name |
small retrosnub icosiicosahedron, compound of 5 gike |
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Circumradius | sqrt[(5-sqrt(5))/8] = 0.587785 |
Inradius | sqrt[(7-3 sqrt(5))/24] = 0.485556 |
Vertex figure | [3^{5}]/2 |
External links |
Faces of an octahedral subset of triangles each, pairwise fall into coincident face planes. So either those can be considered separately (type A); or they are considered as (rotated) 2-triangle-compounds (type B).
(Type A) 60 | 4 1 | 3 2 || 1 -----+--------+-------++-- 2 | 120 * | 1 1 || 1 2 | * 30 | 2 0 || 1 -----+--------+-------++-- 3 | 2 1 | 60 * || 1 3 | 3 0 | * 40 || 1 -----+--------+-------++-- ♦ 12 | 24 6 | 12 8 || 5
(Type B) 60 | 4 1 | 3 2 || 1 -----+--------+-------++-- 2 | 120 * | 1 1 || 1 2 | * 30 | 2 0 || 1 -----+--------+-------++-- 3 | 2 1 | 60 * || 1 6 | 6 0 | * 20 || 2 -----+--------+-------++-- ♦ 12 | 24 6 | 12 8 || 5
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