The ball

    This week I want to talk about the main element Sport socccer the ball. Main element to play is carefully designed to achieve the highest possible spherical shape. Until today, no ball 100% ease. To be most effective, should be as close to a sphere, but still strong enough to hold a kick. Therefore, it was decided to make a regular polyhedron that resembled a sphere. To do an icosahedron was taken, but for "rounding" is truncated vertices so that, cutting the corner of the triangular faces, make the equilateral triangle on a regular hexagon. Triangular faces so become hexagonal. And where there was a vertex of the icosahedron, there will now be a pentagon (5). Have a new polyhedron (not regular): a truncated icosahedron, which consists of 20 hexagonal and 12 pentagonal faces.