Basketball backboards are flat elevated vertical boards with mounted baskets, or rims, used to assist or return the basketball after a shot in a game of basketball. Commonly made of Plexiglas or tempered glass, backboards are designed to prevent shattering when a player dunks.
The NBA, for example, has very specific guidelines as to what backboards are acceptable in official games. NBA regulations require backboards to be made of specific materials, as well as certain sizes. The NBA requires that all backboards be transparent (see-through material). No solid (opaque) materials can be used.
The back of the backboard is considered to be out of bounds however all other sides are fair play. The dimensions of the backboard are generally 6 feet wide by 3.5 feet high.
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“Five sides of the backboard (front, two sides, bottom, and top) are considered in play when contacted by the basketball. The back of the backboard and the area directly behind it are out-of-bounds.”
They are located four feet behind the basket, and normally have a width of 50 feet. Baseline and Endline are interchangeable terms depending upon which team has ball position. Baseline is used for the offensive end of the court. Endline is used for the back court or defensive end of the court.
Basketball Rules Explained: Inside 16 Common Rules - 2021 - MasterClass. From NBA basketball to the Olympic games to pick-up games at the local gym, basketball is a popular sport able to be played at multiple skill levels. Like all sports, basketball has a unique set of rules that establish guidelines for personnel, penalties, and gameplay.