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# Rhombic Enneacontahedron

The rhombic enneacontahedron is the equilateral zonohedron constructed from the 10 diameters of the dodecahedron. This enneacontahedron somewhat resembles a figure of Sharp (Ball and Coxeter 1987).

It has 90 faces, with 30 of one type and the other 60 of another.

It is implemented in the Wolfram Language as PolyhedronData["RhombicEnneacontahedron"].

The rhombic enneacontahedron with edge length has surface area and volume

 (1) (2)

and inertia tensor

 (3)

The rhombic enneacontahedron has Dehn invariant 0.

Enneacontahedron, Equilateral Zonohedron

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## References

Ball, W. W. R. and Coxeter, H. S. M. Mathematical Recreations and Essays, 13th ed. New York: Dover, pp. 142-143, 1987.Sharp, A. Geometry Improv'd: 1. By a Large and Accurate Table of Segments of Circles, with Compendious Tables for Finding a True Proportional Part, Exemplify'd in Making out Logarithms from them, there Being a Table of them for all Primes to 1100, True to 61 Figures. 2. A Concise Treatise of Polyhedra, or Solid Bodies, of Many Bases. London: R. Mount, p. 87, 1717.Towle, R. "Graphics Gallery: Polar Zonohedra." Mathematica J. 6, 8-12, 1996. http://library.wolfram.com/infocenter/Articles/3335/.

## Cite this as:

Weisstein, Eric W. "Rhombic Enneacontahedron." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/RhombicEnneacontahedron.html