Some illustrations of Tutte's spring embedding
Each of these begins with a random embedding (in the plane) of the edge graph of a polytope. The animation illustrates what happens if the bolded cycle is fixed and the remaining edges act like 'rubber bands.'

• Animation for dodecahedron .
• Animation for rombicuboctohedron (triangular face fixed).
• Animation for truncated cube (octagonal face fixed).
• Animation for truncated cube (triangular face fixed).