Acronym | gacid |
Name | great complex icosidodecahedron |
Circumradius | sqrt[(5-sqrt(5))/8] = 0.587785 |
Vertex figure |
[(5/3,3)5] (type A) or [(5/2,3)5]/3 (type B) |
General of army | ike |
Colonel of regiment | sissid |
Confer |
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External links |
As abstract polytope gacid is isomorphic to cid, thereby replacing pentagrams by pentagons.
Looks like a compound of the great icosahedron (gike) and the small stellated dodecahedron (sissid), and indeed edges coincide by pairs, but vertices are identified. Note that without edge-doubling this would be a tetradic figure (type C).
Incidence matrix according to Dynkin symbol
o5/3x3o5*a (type A) . . . | 12 | 10 | 5 5 --------+----+----+------ . x . | 2 | 60 | 1 1 --------+----+----+------ o5/3x . | 5 | 5 | 12 * . x3o | 3 | 3 | * 20
o3/2x5/2o5*a (type A) . . . | 12 | 10 | 5 5 ----------+----+----+------ . x . | 2 | 60 | 1 1 ----------+----+----+------ o3/2x . | 3 | 3 | 20 * . x5/2o | 5 | 5 | * 12
x5/3o5/2o3*a (type B) . . . | 12 | 10 | 5 5 -------------+----+----+------ x . . | 2 | 60 | 1 1 -------------+----+----+------ x5/3o . | 5 | 5 | 12 * x . o3*a | 3 | 3 | * 20
o5/3o5/2x3*a (type B) . . . | 12 | 10 | 5 5 -------------+----+----+------ . . x | 2 | 60 | 1 1 -------------+----+----+------ . o5/2x | 5 | 5 | 12 * o . x3*a | 3 | 3 | * 20
x3/2o5/2o5/2*a (type B) . . . | 12 | 10 | 5 5 ---------------+----+----+------ x . . | 2 | 60 | 1 1 ---------------+----+----+------ x3/2o . | 3 | 3 | 20 * x . o5/2*a | 5 | 5 | * 12
o5/4o5/2x3*a (type A) . . . | 12 | 10 | 5 5 -------------+----+----+------ . . x | 2 | 60 | 1 1 -------------+----+----+------ . o5/2x | 5 | 5 | 12 * o . x3*a | 3 | 3 | * 20
x3/2o5/3o5/3*a (type B) . . . | 12 | 10 | 5 5 ---------------+----+----+------ x . . | 2 | 60 | 1 1 ---------------+----+----+------ x3/2o . | 3 | 3 | 20 * x . o5/3*a | 5 | 5 | * 12
o5/4o3/2x5/3*a (type A) . . . | 12 | 10 | 5 5 ---------------+----+----+------ . . x | 2 | 60 | 1 1 ---------------+----+----+------ . o3/2x | 3 | 3 | 20 * o . x5/3*a | 5 | 5 | * 12
(Type C) 12 | 5 | 5 5 ---+----+------ 2 | 30 | 2 2 :4 incident faces ---+----+------ 3 | 3 | 20 * 5 | 5 | * 12 :pentagrams
β3o5/2o (type A) both( . . . ) | 12 | 10 | 5 5 ----------------+----+----+------ sefa( β3o . ) | 2 | 60 | 1 1 ----------------+----+----+------ β3o . ♦ 3 | 3 | 20 * sefa( β3o5/2o ) | 5 | 5 | * 12 starting figure: x3o5/2o
as uniform compound 12 | 5 5 | 5 5 || 1 1 -----+-------+-------++---- 2 | 30 * | 2 0 || 1 0 2 | * 30 | 0 2 || 0 1 -----+-------+-------++---- 3 | 3 0 | 20 * || 1 0 5 | 0 5 | * 12 || 0 1 -----+-------+-------++---- ♦ 12 | 30 0 | 20 0 || 1 * ♦ 12 | 0 30 | 0 20 || * 1
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