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| compound of four triangular prisms ： ウィキペディア英語版 |
compound of four triangular prisms
This uniform polyhedron compound is a chiral symmetric arrangement of 4 triangular prisms, aligned with the axes of three-fold rotational symmetry of an octahedron.
== Cartesian coordinates ==
Cartesian coordinates for the vertices of this compound are all the even permutations of
: (±1, ±(1+√2), ±(1−√2))
with an even number of minuses in the '±' choices, together with all the odd permutations with an odd number of minuses in the '±' choices.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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