Lane lines are boundaries running from the free throw line to the baseline. The width and shape of the lane lines vary on different levels of the game. The lane lines also contain lane spaces markings used to align and separate the non-shooters.

Let's break down the following key court components below: Baselines and sidelines (boundary lines): These lines define the outer limits of the basketball court. The baselines run behind each basket, while the sidelines stretch along the length of the court. Stepping over these lines during play results in the ball being out of bounds.

To begin with, the sidelines are the two boundary lines that span the length of the court. A full-size court is 50 feet wide, although there are plenty of basketball courts in parks and smaller gyms that are not regulation size. The length of the two sidelines and the two baselines represent the court's complete "in bounds" playing area.

Court lines are vital in determining if a shot scores two or three points, and they also help identify when the ball has crossed the court's boundary line. While the lines on a basketball court may be familiar, laying them out yourself can be challenging—from measuring correctly to knowing which markings to make.