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Polyhedron

A polyhedron is a geometric shape which in mathematics is defined by three related meanings.

In the traditional meaning it is a 3-dimensional polytope, and in a newer meaning that exists alongside the older one it is a bounded or unbounded generalization of a polytope of any dimension.

Further generalizing the latter, there are topological polyhedra.

Many polyhedra are highly symmetric.

Note:   The above text is excerpted from the Wikipedia article "Polyhedron", which has been released under the GNU Free Documentation License.
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September 3, 2015

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