# Graph of a Six-Cube and Skeleton of a Rhombic Triacontahedron

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This Demonstration shows the constructions of a graph of a six-cube and the skeleton of a rhombic triacontahedron.

Contributed by: Gábor Gévay, Izidor Hafner and Tomazv Pisanski (September 2019)

Open content licensed under CC BY-NC-SA

## Details

The skeleton of the rhombic triacontahedron can be considered as a subgraph of the graph of the six-dimensional cube.

We demonstrate this relationship by showing a representation of the six-cube graph in three-dimensional space with the following properties: 32 of the 64 vertices, 60 of the 192 edges and 30 of the 240 faces of the six-cube are drawn as the vertices, edges and faces, respectively, of the rhombic triacontahedron.

The remaining vertices, edges and faces of the six-cube fall into the interior of the triacontahedron.

This representation can be realized at the cost of some distortions: the square faces of the six-cube are distorted to parallelograms (in particular, those appearing as faces of the triacontahedron will be rhombuses).

References

[1] H. S. M. Coxeter, *Regular Polytopes*, London: Methuen, 1948.

[2] P. R. Cromwell, *Polyhedra*, Cambridge, UK: Cambridge University Press, 1997.

[3] G. Gévay, "Icosahedral Morphology," *Fivefold Symmetry* (I. Hargittai, ed.), Singapore: World Scientific, 1992, pp. 177–203. doi:10.1142/9789814439497_0012.

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