Sidelines: The two boundary lines that run the length of the court and are typically placed 50 feet apart from each other. Together with Baseline/Endline, they demarcate the playing area.
Baseline/Endline: The lines that link the sidelines, from behind the basket, on either end. These are located four feet behind the post and, normally, are 50 feet apart. Baseline refers to the line at the offensive end and endline refers to the line at the defensive end.
Mid Court Line: The line which divides the court in two halves.
Three Point Line: The mark which indicates the area outside of which a field goal is worth three points.
Free Throw Line: The boundary, fifteen feet away from the backboard, from outside of which free throws are taken. It is also used for marking the three second area. This line cannot be stepped on or crossed during a free throw until the ball touches the rim.
Free Throw Circle: The circle, 12 feet in diameter, which is used for free throws and jump balls. During free throws, the shooter must shoot from inside this circle. During jump balls, the jumpers of each team occupy this circle with everyone else outside the circle’s area.
Lane Line: These lines start from the baseline and finish at the free throw line. The lane spaces on either side are occupied by the team defending a free throw.
Center Circle: A 12-feet wide circle is marked at the center of the court. It is where the game starts and jump balls are taken. For jump balls, the jumpers of each team occupy this circle with everyone else outside the circle’s area.
Three Second Area: It is the area demarcated by the free throw line and the lane lines. As is clear from its name, no player can spend more than three seconds in this area. It is also known as the “paint”.
Block: It is the area marked on the lane lines, which separates the offence from the defence during a free throw.
Elbow: It is the corner zone created by the joining of the free throw line with a lane line.
Free Throw Line Extended: It is an imaginary extension of the free throw line which guides a team’s strategy.
Top Of Circle (Key): It is the area perpendicular to the basket and just outside the free throw circle.
Wing: The wing zones are located on either side of the court near the free throw line extended. The wing on the same side as the player is called “ballside or strongside” wing and the wing on the opposite side is called “weakside” wing.
Corner: This is the area where the sideline and baseline meet.
Short Corner: The area, at the ends and either side of the court, between the sideline and its nearest lane line.
4′ Restricted Area: This is the area where the defenders are not allowed to charge the attacking player.
Front Court: The offensive half of the court from the midcourt line to the baseline. Once a team advances the ball to the front court, it can not pass the ball back to the other half of the court behind the midcourt line.
Back Court: The defensive half of the court from the midcourt line to the endline.