Acronym | retid (alt.: amtid) |
Name | rectified/ambified truncated dodecahedron |
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Circumradius | (5+3 sqrt(5))/2 = 5.854102 |
Face vector | 90, 180, 92 |
Confer |
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Rectification wrt. a non-regular polytope is meant to be the singular instance of truncations on all vertices at such a depth that the hyperplane intersections on the former edges will coincide (provided such a choice exists). Within the specific case of tid as a pre-image these intersection points might differ on its 2 edge types. Therefore tid cannot be rectified (within this stronger sense). Nonetheless the Conway operator of ambification (chosing the former edge centers generally) clearly is applicable. This would result in 2 different edge sizes in the outcome polyhedron. That one here is scaled such so that the shorter one becomes unity. Then the larger edge will have size a = x(10) = sqrt[(5+sqrt(5))/2] = 1.902113.
Incidence matrix according to Dynkin symbol
xo3oA5Ao&#za → height = 0 A = aa = u+f = (5+sqrt(5))/2 = 3.618034 (pseudo) a = x(10) = sqrt[(5+sqrt(5))/2] = 1.902113 (tegum sum of (x,A)-srid and A-id) o.3o.5o. | 60 * | 2 2 | 1 2 1 .o3.o5.o | * 30 | 0 4 | 0 2 2 -------------+-------+--------+--------- x. .. .. | 2 0 | 60 * | 1 1 0 oo3oo5oo&#a | 1 1 | * 120 | 0 1 1 -------------+-------+--------+--------- x.3o. .. | 3 0 | 3 0 | 20 * * x-{3} xo .. ..&#a | 2 1 | 1 2 | * 60 * {(xaa)} .. oA5Ao&#za | 5 5 | 0 10 | * * 12 a-{10}
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