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Basketball courts are divided into several sections, including the playing surface, sidelines, end lines, centre line, key or free-throw lane, backboards, and basketball rings. Each line and marking, from the free-throw line to the three-point line, play a crucial role in the game's dynamics. The three-point line, for example, marks the area in which players can score three points, as opposed to two points when shooting inside this arc. The free-throw line, also known as the foul line, is located fifteen feet from the basketball hoop and is where basketball players shoot fouls for their team. The lane lines, also known as paint lines or key lines, are located at the basketball hoop and extend from the free-throw line to behind the backboard. These lines are important because they mark the area where basketball players can't stay for more than three seconds, or it can result in a violation at the professional level.
| Characteristics | Values |
|---|---|
| Sidelines | Two boundary lines running the length of the court |
| Baselines/Endlines | Boundary lines running the width of the court |
| Mid-court line | Divides the court in half |
| Three-point line | A semicircle arc that runs from the sideline to the outside of the court near the basket |
| Foul/Free-throw line | Located 15 feet from the basket |
| The Key/Free-throw lane/Shaded lane | A painted area beneath the basket; 16.02 feet for the NBA and 4.9m wide and 5.8m long for FIBA |
| The Paint | Area between the lane lines and the baseline |
| The Wing | Area on the side of the court near the free-throw line |
| The Corner | Area where the sideline and baseline meet |
| The Short Corner | Area along the baseline halfway between the sideline and the lane line |
| Restricted Area | A semi-circular 4' restraining area in front of the basket |
| No-charge zone arc | A 4-foot radius from the center of the basket in the NBA and WNBA |
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What You'll Learn
Sidelines and baselines/endlines
Sidelines
The sidelines are the two boundary lines that run parallel down the length of the court. They are typically 50 feet apart, though this can vary depending on the age of the players and the width of the court. For example, in international basketball, the court is 92 feet by 49 feet, while in high school and junior high basketball, the court is 84 feet by 50 feet. The sidelines are used to indicate in- and out-of-bounds plays, and they are also where the benches, scorer's table, officials, coaches, and players sit.
Baselines/Endlines
The baselines, also known as end lines, are the boundary lines that run across the width of the court, from sideline to sideline, at the back of the court. They are typically 50 feet long. The baselines are located approximately four feet behind the basketball rim, which is usually mounted to a backboard. The baseline is used for the offensive end of the court, while the endline is used for the defensive end. If a player with the ball steps on or crosses the baseline or sideline, it is an out-of-bounds violation, and the player forfeits the ball to the opposing team. However, during an inbound pass, a player is allowed to have possession of the ball while standing out of bounds near a baseline or sideline.
Additionally, the short corner is an area along the baseline halfway between the sideline and the lane line. It is a strategic offensive area used against zone defenses.
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Three-point line
The three-point line is a designated arc surrounding the basket, beyond which a field goal is worth three points. The distance from the basket to the three-point line varies by competition level. In the National Basketball Association (NBA), the arc is 23 feet 9 inches (7.24 m) from the centre of the basket. In the Women's National Basketball Association (WNBA), the National Collegiate Athletic Association (NCAA), and the National Association of Intercollegiate Athletics (NAIA), the arc is 6.75 m (22 ft 1.75 inches) from the centre of the basket.
The three-point line was first introduced by the sport's international governing body, FIBA, in 1984, at 6.25 m (20 ft 6 inches). It made its Olympic debut in 1988 in Seoul, South Korea. The NCAA's Southern Conference became the first collegiate conference to use the three-point rule, adopting a 22-foot (6.71 m) line for the 1980–81 season. Over the following five years, NCAA conferences differed in their use of the rule and distance required for a three-pointer. The line was as close as 17 ft 9 inches (5.41 m) in the Atlantic Coast Conference and as far away as 22 ft (6.71 m) in the Big Sky.
In 1994, the NBA attempted to address decreased scoring by shortening the distance of the line to a uniform 22 feet (6.7 m) around the basket. It was moved back to its original distance after the 1996–97 season. FIBA and the NCAA both adopted the three-point line in 1986. Most high school associations in the USA have a distance of 19.75 feet. This was formerly the distance for college basketball.
In NBA, WNBA, and FIBA games, video replay does not have to occur immediately following a shot. Play can continue, and officials can adjust the scoring later in the game after reviewing the video. If a shooter is fouled while attempting a three-pointer and misses, the shooter is awarded three free-throw attempts. If a player completes a three-pointer while being fouled, the player is awarded one free-throw for a possible four-point play.
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Free throw/foul line
The free throw line, also known as the foul line or the charity stripe, is a line situated at the end of the restricted area. It is located 15 feet from the front of the basket and 19 feet from the baseline.
Free throws are awarded when a player is fouled by an opponent and are taken from behind the free throw line. They are also awarded in other situations, including technical fouls, and when the fouling team has entered the bonus/penalty situation. The number of free throws awarded depends on the situation, with players receiving between one and three free throws. Each successful free throw is worth one point.
In the NBA, players typically make 70-80% of their free throw attempts. However, there are variations in the rules regarding free throws between different leagues and levels of competition. For example, in the NCAA, technical fouls are divided into "Class A" and "Class B", with Class A technicals resulting in two free throws and Class B technicals resulting in one.
The area in front of the free throw line is known as the Three Second Area or the "key". This area varies in size depending on the league and level of competition. In the NBA, it is 16 feet wide, while in college basketball, it is 12 feet wide.
The free throw line is an important line on the basketball court, serving as the starting point for unopposed attempts to score points through free throws. It is also used to determine the positioning of players during a free throw attempt, with specific rules dictating where players can stand in relation to the line.
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The key/paint/lane lines
The key, also known as the paint or the free-throw lane, is a crucial area on a basketball court. It is usually painted a different colour to the rest of the court to make it stand out, hence its name, "the paint". The size of the key varies depending on the league and level of competition. For example, in the NBA and FIBA, the key is 16 feet wide and extends 15 feet from the backboard to the free-throw line, whereas in college, high school and junior high play, the key is 12 feet wide.
The key is marked by lane lines, which run from the free-throw line to the baseline. These lane lines, or key lines, are an important aspect of gameplay. They dictate that players cannot remain in the area for more than three seconds, or a violation may be called. The lane lines also contain lane space markings, which are used to align and separate the non-shooters. During a free-throw attempt, players must stand behind the hash marks on the baseline, which indicate their designated places.
The three-point line, which is located outside the key, is another significant boundary. It marks the area where players can score three points, as opposed to two points when shooting inside this arc. This line is not just a scoring demarcation; it also influences strategic play, impacting both offensive and defensive tactics.
The key, with its associated lane lines, three-point line and restricted area, is a vital part of the basketball court. Understanding the strategic significance of this area can greatly enhance one's knowledge of the game and its complexities.
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Centre circle
The centre circle, also known as the "jump circle", is located at the centre of the basketball court and is used for the “tip off” at the start of each game. It is also used for jump balls, where non-jumpers must remain outside the circle until the ball is tapped by one of the jumpers. The centre circle has a diameter of 12 feet (3.66 metres) in NBA courts. The free throw circle, used for free throws, is the same size as the centre circle.
The centre circle is one of the three 6-foot circles on a basketball court, with the other two being located at each end of the court, centred on the foul line. These circles are where jump balls take place, depending on the location of the call. The centre-court circle is where the initial tip takes place at the beginning of the game.
The centre circle is an important part of the basketball court, providing a focal point for the start of the game and jump ball situations. It is one of the key lines that guide players in their positioning and movements, contributing to the strategic nature of the game.
The specific dimensions and placement of the centre circle can vary depending on the level of the game and the governing body that regulates it. For example, the distance of the three-point line from the basket may differ, affecting the overall layout of the court and the placement of certain lines.
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Frequently asked questions
The three-point line is a semicircle arc that runs from the sideline to the outside of the basketball court near the basket. It marks the area in which players can score three points, as opposed to two points when shooting inside this arc.
The free throw line, also known as the foul line, is located 15 feet from the basketball hoop. It is where basketball players shoot fouls for their team.
The sidelines are the two boundary lines that run the length of the court. Their location is determined by the width of the court, which is normally 50 feet wide. They provide the boundary for in- and out-of-bounds plays.
The mid-court line, also known as the half-court line, runs through the basketball court between the two sidelines, from baseline to baseline. It divides the court into two equal sides.
