How many sides and vertices?


The shape of a soccer ball can be represented by a polyhedron, called the truncated icosahedron, whose faces are 12 regular pentagons and 20 regular hexagons, having the same side length. Each pentagon is
surrounded by 5 hexagons, whereas each hexagon is surrounded by 3 pentagons and 3 hexagons How many sides are there? And how many vertices?