Antenna are flexible red and white rods that are on the net marking the out-of-bounds. This out-of-bounds extends all the way up to the ceiling and down to the floor.
Attack line
The attack line is the line 3 meters from the net and runs parallel on each side of the court. If the attacker is back row, they must jump from behind this attack
line if they attack the ball when it's completely above the height of the net.
(The dotted lines in the photo are the attack lines extended outside the court)
Backcourt
The backcourt area is the area of the court behind the attack line that is in front of the baseline and between the sidelines.
Baseline
The baseline is also called the endline. This is the line at the end of the court.
Free Zone
The free zone is the area outside the boundary lines of the court where players sometimes make plays.
Centerline
The centerline is the line that runs underneath the net. This line is the width of the court and divides the volleyball court into two equal
halves.
Net
The net is the volleyball net that goes down the middle of the court and divides each teams playing area in half.
Replacement Zone
The replacement zone is the area of the court where the libero enters the game for a
back row player.
Sidelines
The sidelines are the boundary lines on the sides of the court that connect to the baselines. The sidelines are 60 feet long.
Substitution Zone
The substitution zone is the area between the attack line and the centerline along the sideline where substitutes sub into the game.