Acronym | etripy, J7 |
Name | elongated triangular pyramid |
© © | |
Vertex figure | [33], [32,42], [3,42] |
General of army | (is itself convex) |
Colonel of regiment | (is itself locally convex) |
Dihedral angles | |
Face vector | 7, 12, 7 |
Confer |
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External links |
While in etripy the trigonal base of trip gets augmented with a pyramid (tet), autip similarily would have the lacing square being augmented with a pyramid (squippy).
Incidence matrix according to Dynkin symbol
oxx3ooo&#xt → height(1,2) = sqrt(3/8) = 0.612372 height(2,3) = 1 (pt || pseudo {3} || {3}) o..3o.. | 1 * * | 3 0 0 0 | 3 0 0 .o.3.o. | * 3 * | 1 2 1 0 | 2 2 0 ..o3..o | * * 3 | 0 0 1 2 | 0 2 1 -----------+-------+---------+------ oo.3oo.&#x | 1 1 0 | 3 * * * | 2 0 0 .x. ... | 0 2 0 | * 3 * * | 1 1 0 .oo3.oo&#x | 0 1 1 | * * 3 * | 0 2 0 ..x ... | 0 0 2 | * * * 3 | 0 1 1 -----------+-------+---------+------ ox. ...&#x | 1 2 0 | 2 1 0 0 | 3 * * .xx ...&#x | 0 2 2 | 0 1 2 1 | * 3 * ..x3..o | 0 0 3 | 0 0 0 3 | * * 1
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