What to remember

  • Boundary lines are normally out of bounds.
  • Court dimensions vary by level.
  • The lane organizes free throws and paint play.
  • Know your actual court rather than assuming professional dimensions.

01

Boundaries and center line

The sidelines run the length of the court and end lines or baselines run behind the baskets. A player touching a boundary line while holding the ball is generally out of bounds.

The center line divides frontcourt and backcourt. It matters for advancing the ball and backcourt violations under the applicable timing rules.

02

Lane and free-throw markings

The rectangular lane, often called the paint or key, extends from the end line to the free-throw line. Marked lane spaces organize player positions during free throws.

Three-second and lane-entry rules depend on offense, defense, league, and game situation. Learn the version your officials use.

03

Three-point line and basket area

A made shot counts as three points when released by a player positioned outside the arc under the rules. If a foot touches the line, the shot is generally worth two points.

Professional and international courts may include a restricted-area arc under the basket. Its role and dimensions are rule-set specific and some courts do not include it.

04

Use markings to practice

  1. Use the center line for controlled changes of direction.
  2. Use lane lines to learn spacing and defensive help.
  3. Use free-throw-line extended as a passing reference.
  4. Use the arc to identify comfortable range, not to force long shots.
  5. Check every line for traction before drills.

Avoid these

Common beginner mistakes

  • Treating the boundary line as in bounds.
  • Assuming every court has NBA dimensions.
  • Standing in the lane without knowing the count rules.
  • Forcing three-point shots because the line exists.
  • Using court lines without checking surface safety.

Try this next

Court-map walk

10 minutes
  1. Walk and name both sidelines and end lines.
  2. Find center line, circle, lane, and free-throw line.
  3. Trace the three-point arc.
  4. Identify inbound and team-bench areas if marked.
  5. Explain one rule connected to each area.

Score it: Name every major marking without looking at notes.

Beginner questions

Is the basketball court boundary line in or out?

The boundary line is generally out of bounds. A player touching it while in contact with the ball is out.

Are all three-point lines the same distance?

No. Distances and shapes vary by league, age, and facility.

Sources and further learning

We use official basketball organizations for rules, standards, and instructional references. Always confirm the current rules for your league.