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polyhedra <a polyhedron; polyhedra / polyhedrons> N

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English
However, despite the nonexistence of finite chiral three-dimensional polyhedra, there exist infinite three-dimensional chiral skew polyhedra of types 4,6, 6,4, and 6,6.
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The skeletons of these polyhedra form 60-node vertex-transitive graphs.
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There are 5 finite convex regular polyhedra, known as the Platonic solids.
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They are (globally) projective polyhedra, and are the projective counterparts of the Platonic solids.
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From a viable origin point, within a lattice, there exists an unlimited series of polyhedra.
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The outer protein shells of many viruses form regular polyhedra.
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It was not until the 19th century that higher dimensions were discovered and geometers learned to construct analogues of polygons and polyhedra in them.
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However, due to chemical bonding characteristics glasses do possess a high degree of short-range order with respect to local atomic polyhedra.
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Numerous children's toys, generally aimed at the teen or pre-teen age bracket, allow experimentation with regular polygons and polyhedra.
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They came up with the methodology to pack asymmetric icosahedra into crystals using other polyhedra with larger coordination number and atoms.
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