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Consider any star of n line segments through one point in space such that no three lines are coplanar. Then there exists a polyhedron, known as a zonohedron, whose faces consist of n(n-1) rhombi and whose edges are parallel to the n given lines in sets of 2(n-1). Furthermore, for every pair of the n lines, there is a pair of opposite faces whose sides lie in those directions (Ball and Coxeter 1987, p. 141). A zonohedron is a therefore a polyhedron in which every face is centrally…

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[Kyo Kara Maoh] Wolfram von Bielefeld and Yuri Shibuya

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The (general) icosahedron is a 20-faced polyhedron (where icos- derives from the Greek word for "twenty" and -hedron comes from the Indo-European word for "seat"). Examples illustrated above include the decagonal dipyramid, elongated triangular gyrobicupola (Johnson solid J_(36)), elongated triangular orthobicupola (J_(35)), gyroelongated triangular cupola (J_(22)), Jessen's orthogonal icosahedron, metabiaugmented dodecahedron (J_(60)), nonagonal antiprism,...