regular icosahedron


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regular icosahedron

[′reg·yə·lər ī‚käs·ə′hē·drən]
(mathematics)
A 20-sided regular polyhedron, having five equilateral triangles meeting at each face.
References in periodicals archive ?
Let [DELTA] be the regular icosahedron that is dual to the dodecahedron in Section 7 (see Figure 7).
It is presented in Figure 3, from where it is obvious how the labels of vertices of that polyhedron are chosen, starting from the labels of vertices of the affine regular icosahedron.
5a, 5b, 5c), or the duality of regular dodecahedrons and a regular icosahedron (Fig.