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  2. Ball (association football) - Wikipedia

    en.wikipedia.org/wiki/Ball_(association_football)

    A football or soccer ball is the ball used in the sport of association football. The ball's spherical shape, as well as its size, weight, mass, and material composition, are specified by Law 2 of the Laws of the Game maintained by the International Football Association Board . [ 1 ]

  3. Hexagonal crystal family - Wikipedia

    en.wikipedia.org/wiki/Hexagonal_crystal_family

    The trigonal crystal system consists of the 5 point groups that have a single three-fold rotation axis, which includes space groups 143 to 167. These 5 point groups have 7 corresponding space groups (denoted by R) assigned to the rhombohedral lattice system and 18 corresponding space groups (denoted by P) assigned to the hexagonal lattice system.

  4. Spherical polyhedron - Wikipedia

    en.wikipedia.org/wiki/Spherical_polyhedron

    The most familiar spherical polyhedron is the soccer ball, thought of as a spherical truncated icosahedron. The next most popular spherical polyhedron is the beach ball, thought of as a hosohedron. Some "improper" polyhedra, such as hosohedra and their duals, dihedra, exist as spherical polyhedra, but their flat-faced analogs are degenerate.

  5. Football (ball) - Wikipedia

    en.wikipedia.org/wiki/Football_(ball)

    Adidas Tricolore, the official ball for the 1998 World Cup. Law 2 of the game specifies that the ball is an air-filled sphere with a circumference of 68–70 cm (27–28 in), a weight of 410–450 g (14–16 oz), inflated to a pressure of 0.6 to 1.1 atmospheres (60–111 kPa or 8.7–16.1 psi) "at sea level", and covered in leather or "other suitable material". [7]

  6. Glossary of association football terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_association...

    A player doing a keepie-uppie Association football (more commonly known as football or soccer) was first codified in 1863 in England, although games that involved the kicking of a ball were evident considerably earlier. A large number of football-related terms have since emerged to describe various aspects of the sport and its culture. The evolution of the sport has been mirrored by changes in ...

  7. OHSAA high school boys soccer state final score | Walsh ...

    www.aol.com/ohsaa-high-school-boys-soccer...

    The Walsh Jesuit boys soccer team will have to wait another season to win its first state title since 2006. Walsh's season ended in heartbreak after the Warriors (17-3-3) and New Albany (19-1-1 ...

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