Geodesic Sphere (Icosahedron freq. 2)
Paper model engineered and folded by Arturo Pascalin using modules by Heinz Strobl.
It has 80 triangular faces (Only 20 of them equilateral) 120 edge struts. 42 vertices, 12 pentavalent, the rest hexavalent. Builded from 200 modules in total. Geodesic chord lengths were calculated using formulas by Hugh Kenner.