Octahedron C0 = 0.7071067811865475244008443621048 = sqrt(2) / 2 V0 = (0.0, 0.0, C0) V1 = (0.0, 0.0, -C0) V2 = ( C0, 0.0, 0.0) V3 = (-C0, 0.0, 0.0) V4 = (0.0, C0, 0.0) V5 = (0.0, -C0, 0.0) Faces: { 0, 2, 4 } { 0, 4, 3 } { 0, 3, 5 } { 0, 5, 2 } { 1, 2, 5 } { 1, 5, 3 } { 1, 3, 4 } { 1, 4, 2 }