A white line down the middle of the table, parallel with the side lines, that divides the courts into half-courts.
The line on a statistical process control chart which represents the characteristic's central tendency.
Virtual line running down the stage through the exact center of the proscenium opening.
The imaginary line running from bow to stern along the middle of the boat.
A line drawn from one hack to the other, passing through the tee at both ends of the ice.
Basic theory of Wing Chun Kung Fu, in which students are taught to defend and attack imaginary line running down through the center of the body on which all vital organs are located.
The line dividing the field in half.
Imaginary longitudinal line running from bow to stern.
The line between the service boxes and the smaller line that bisects the baseline.
a line that bisects a plane figure
Line perpendicular to the net that separates the left and right service courts.
A line down the middle of the ice from one hack to the other.
The line that divides the field into two halves.
The red line.
While in guard or mount, the center line can be thought of a boundary down the middle of both opponents. Crossing the center line is when one opponent brings their entire arm or shoulder over that imaginary line. More often than not, it's considered a bad thing as it's exposing your back to your opponent.
Divides the length of the playing court in half to create the four equal quadrants.
An imaginary or real line that divides the stage area into two equal parts, running from downstage to upstage.
The line that divides the field in half, parallel to the goal lines.
a red, 12-inch wide line across the ice midway between the two goals.
An imaginary line drawn through the center of the aircraft from the nose through the tail.
The line that runs between your finger holes and through the center of your thumb hole.
see Midfield line.
A line imprinted with the stamps for use in perforating. This may be horizontal or vertical or both.
The boundary that runs directly under the net and divides the court into two equal halves.
A line that bisects the field along its width and runs through the center circle.
Vertical line between the fingers and through the middle of the thumb.
Refers to the line perpendicular to the center of the net--dividing the service boxes--and the line at the baseline.
a line that divides the court into halves. It's also known as the division line, mid-court line, ten-second line, and time line.