Archimedean solids are convex solids where each face is a regular polygon. Each vertex in the solid is surrounded by the same polygons in the same sequence. In contrast to Platonic solids, different polygons occur in each of the Archimedean solids. For example the cuboctahedron below contains two triangles and two squares around each vertex, in the order triangle-square-triangle-square (3-4-3-4).