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Nonconvex great rhombicuboctahedron

Nonconvex uniform polyhedron with 26 faces From Wikipedia, the free encyclopedia

Nonconvex great rhombicuboctahedron
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In geometry, the nonconvex great rhombicuboctahedron is a nonconvex uniform polyhedron, indexed as U17. It has 26 faces (8 triangles and 18 squares), 48 edges, and 24 vertices.[1] It is represented by the Schläfli symbol rr{4,32} and Coxeter-Dynkin diagram of . Its vertex figure is a crossed quadrilateral.

Nonconvex great rhombicuboctahedron
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TypeUniform star polyhedron
ElementsF = 26, E = 48
V = 24 (χ = 2)
Faces by sides8{3}+(6+12){4}
Coxeter diagram
Wythoff symbol3/2 4 | 2
3 4/3 | 2
Symmetry groupOh, [4,3], *432
Index referencesU17, C59, W85
Dual polyhedronGreat deltoidal icositetrahedron
Vertex figureThumb
4.4.4.3/2
Bowers acronymQuerco
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3D model of a nonconvex great rhombicuboctahedron

This model shares the name with the convex great rhombicuboctahedron, also called the truncated cuboctahedron.

An alternative name for this figure is quasirhombicuboctahedron. From that derives its Bowers acronym: querco.

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Orthographic projections

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Cartesian coordinates

Cartesian coordinates for the vertices of a nonconvex great rhombicuboctahedron centered at the origin with edge length 1 are all the permutations of

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It shares the vertex arrangement with the convex truncated cube. It additionally shares its edge arrangement with the great cubicuboctahedron (having the triangular faces and 6 square faces in common), and with the great rhombihexahedron (having 12 square faces in common). It has the same vertex figure as the pseudo great rhombicuboctahedron, which is not a uniform polyhedron.

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Truncated cube
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Great rhombicuboctahedron
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Great cubicuboctahedron
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Great rhombihexahedron
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Pseudo great rhombicuboctahedron

Great deltoidal icositetrahedron

More information Great deltoidal icositetrahedron ...
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3D model of a great deltoidal icositetrahedron

The great deltoidal icositetrahedron is the dual of the nonconvex great rhombicuboctahedron.

References

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