Английская Википедия:Compound of four octahedra

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Шаблон:Short description

Compound of four octahedra
Файл:UC12-4 octahedra.png
Type Uniform compound
Index UC12
Convex hull Nonuniform truncated cube
Polyhedra 4 octahedra
Faces 8+24 triangles
Edges 48
Vertices 24
Symmetry group octahedral (Oh)
Subgroup restricting to one constituent 3-fold antiprismatic (D3d)
Файл:Compound of four octahedra.stl
3D model of a compound of four octahedra

The compound of four octahedra is a uniform polyhedron compound. It's composed of a symmetric arrangement of 4 octahedra, considered as triangular antiprisms. It can be constructed by superimposing four identical octahedra, and then rotating each by 60 degrees about a separate axis (that passes through the centres of two opposite octahedral faces).

Its dual is the compound of four cubes.

Cartesian coordinates

Cartesian coordinates for the vertices of this compound are all the permutations of

(±2, ±1, ±2)

See also

References


Шаблон:Polyhedron-stub