Basketball Introduction
Basketball is an athletic sport,usually played on an indoor court
in which two competing teams of five players each attempt to score by
throwing an inflated ball so that it descends through one of two baskets
suspended,at each end of the court,above their heads....
Because of its continuous action and frequent scoring,basketball is one of
the most popular spectator as well as participant sports in the world.
The measurements of American and international basketball courts
differ slightly.The basketball court is a rectangular area ranging in size
from about 29 m by 15 m (about 94 ft by 50 ft) to about 22 m by 13 m (about
74 ft by 42 ft)....Each backboard is
anchored to a wall,suspended from the ceiling,or otherwise mounted so
that its lower edge is about 2....The regulation basketball is
an inflated,leather- or nylon-covered sphere that weighs from 567 to 624 g
(20 to 22 oz) and has a circumference of about 76 cm (about 30 in).