court
Hard rectangular surface (50 ft x 94 ft) on which a basketball game is played.
restricting circle 
Circle around the center circle; players not taking part in the tip-off must be outside this circle.
timekeeper 
Official who keeps time; this individual stops the clock when play stops and starts it again when play resumes.
clock operator 
Official who keeps track of a team’s possession time.
scorer 
Official who records points and fouls committed by the players.
center circle 
Circle at center court used for tip-offs at the start of a half and after a goal; a tip-off is when two players jump for the ball and try to push it toward their teammates.
sideline 
Line along the sides of the court; when the ball crosses this line, it is put back into play at the same place.
referee 
Official who assists the first referee and also stays at the perimeter of the court so as not to interfere with the players.
center line 
Line dividing the court into two halves, one for each team.
referee 
Official responsible for applying the rules; this individual does tip-offs and signals fouls.
semicircle 
Semicircular zone where the player takes position to make a free throw, which is worth one point.
trainer 
Individual who treats injured players.
assistant coach 
Person who assists the coach and can replace the coach if needed.
coach 
The team’s leader; the coach plots strategy and decides who plays in different situations.
free throw line 
Line parallel to the end line; the shooter stands behind it for a free throw (throw awarded after a foul).
second space 
Space along the restricted area near the free throw line; one of the shooter’s teammates is in this space when there is a free throw.
first space 
Space along the restricted area near the end line; one of the opposing players is in this space when there is a free throw.
end line 
Line marking the ends of the court; when the ball crosses this line, one team puts it back into play at the same place.
restricted area 
A trapezoidal area between the end line and the free throw line; an attacking player is not allowed to stay in it for more than three seconds.