A backboard is a flat, rectangular surface used in sports, primarily in basketball. It is positioned behind the hoop and serves as a rebound surface for the ball. Players can use the backboard to make bank shots, which occur when the ball bounces off the backboard before going into the basket. Backboards are typically made of materials like glass or acrylic, providing durability and clarity for visibility. They are mounted on a frame and are an essential part of the basketball hoop system. The height of the backboard is standardized at 10 feet above the playing surface in official games.