The = 𝚽 edges form 72 flat regular central decagons (12 sets of 6 orthogonal planes), 6 of which cross at each vertex. Just as the icosidodecahedron can be partitioned into 6 central decagons (60 edges = 6 × 10), the 600-cell can be partitioned into 72 decagons (720 edges = 72 × 10). The 720 edges divide the surface into 1200 triangular faces and 600 tetrahedral cells: a 600-cell. The 720 edges occur in 360 parallel pairs, apart. As in the decagon and the icosidodecahedron, the edges occur in golden triangles which meet at the center of the polytope.