regular icosahedron


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Related to regular icosahedron: regular octahedron, regular dodecahedron, regular tetrahedron
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Noun1.Regular icosahedron - an icosahedron with twenty equilateral triangles as facesregular icosahedron - an icosahedron with twenty equilateral triangles as faces
ideal solid, Platonic body, Platonic solid, regular convex polyhedron, regular convex solid, regular polyhedron - any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent
References in periodicals archive ?
The direct connection between the 3-D and 4-D spaces is realized when one equates the 120 group operations on the regular icosahedron (3, 5) to the vectors for the 120 vertices of the 600-cell hypericosahedron (3, 3, 5) in 4-D space in a particular way.