Shot reverse shot - a technique used to give the impression of interaction between two characters. Shots alternate between both characters. If speech is involved, the shot focuses on who is speaking before moving to the other character for their response or reaction.
180 degree rule - the characters remain in the same position whilst the camera moves in a 180 degree motion around them. If characters appeared to change places without seemingly moving, this would generate confusion with the audience.
Match on action - when an action is shown and is followed into the next shot. May show natural conclusion e.g. opening door and walking through it, or continuing. This is important in maintaining continuity with the audience.
