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Product Description
An "irregular" polyhedron, by abuse of notation, is a polyhedron for which three faces meet at each vertex, and no two adjacent faces have the same number of sides. I don't know if this is the only consisting of only octagons, heptagons, hexagons and triangles, but the number of each type may not be changed (there are 42, 48, 56 and 48 respectively).