# icosahedron: 12 vertices, 30 edges, 20 faces
v 0 1 0.618034
v 0 -1 0.618034
v 0 1 -0.618034
v 0 -1 -0.618034
v 0.618034 0 1
v 0.618034 0 -1
v -0.618034 0 1
v -0.618034 0 -1
v 1 0.618034 0
v -1 0.618034 0
v 1 -0.618034 0
v -1 -0.618034 0
f 7 5 1
f 5 7 2
f 8 6 4
f 6 8 3
f 11 9 5
f 9 11 6
f 10 12 7
f 12 10 8
f 2 4 11
f 4 2 12
f 3 1 9
f 1 3 10
f 1 5 9
f 1 10 7
f 3 9 6
f 3 8 10
f 2 11 5
f 2 7 12
f 4 6 11
f 4 12 8