The basketball wall is over 311 square meters. It is 28 meters long, 15 meters wide, 1.15 meters wide in lines, 1.8 meters in radius of middle circle and 6.75 meters in bisector (it was opened in 2111, but it was 6.25 meters before).

Among them, the penalty line is 5.81m long from the inner edge to the outermost edge of the end line. The basketball playing field is a rectangular solid plane with no obstacles. Basketball field has soil, cement, asphalt and wood. Nowadays, the plastic floor of basketball match field is used more.

scene analysis

1. Boundary: The boundary of the stadium is at least 2 meters away from spectators, billboards or any other obstacles. The boundary of the long side of the stadium is called the sideline, and the boundary of the short side is called the end line.

2. midline: draw a line parallel to the end line from the midpoint of the sideline, which is called midline; The center line should be extended by 1.15 m (15 cm) to both sides of the sideline.