Large icosahedron
In Geometry, the large icosahedron is a Solide of Kepler-Poinsot . It is one of the four regular polyhedron not-convex. It is composed of 20 triangular faces, with five triangles meeting at each top in a pentagrammic continuation.
The 12 tops coincide with the localizations of the tops of a Icosaèdre. The 30 edges are divided with the Petit spangled dodecahedron.
Like a stellation
It is also a Stellation of an icosahedron, counted to Wenninger like models it and the 16 {{E}} of the 17 {{E}} stellations of the icosahedron and 7th of the 59 stellations by Coxeter.
References
- Magnus Wenninger : Polyhedron Models , 1974 ISBN 0-521-09859-9
- H.S. Mr. Coxeter: The Fifty-Nine Icosahedra , 1938 ISBN 0-387-90770-X
External bonds
- Mathworld : 15 stellations of the icosahedron
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