The Rules

The Definition of the three rules

Match on match action - A cut made on action or movement between two shots in which the action has been overlapped either by repetition of the action or by the use of more than one camera.

Shot reverse shot -  A film technique where one character is shown looking (often off-screen) at another character, and then the other character is shown looking "back" at the first character. Since the characters are shown facing in opposite directions, the viewer unconsciously assumes that they are looking at each other.

The 180 degree rule  - Two characters in a shot should always be filmed from one side, there is an imaginary line used that must not be crossed as this may create confusion for the viewer. The two people in the shot must have the same left/right relationship to each other.