The 180 degree rule describes the picture of two people sitting in front of each other creating an imaginary line. This way the viewer has a better understanding for the environment around the main conversation and can be a part of the situation.

Match on action is an editing technique in which one shot cuts to another shot, like a person walking through a door and being showed opening the door from behind, and opening the door from the front. This way the same action is viewed in different ways and it is easier to draw the attention to a certain action.

 

Shot/reverse shot contains separate and closer shots of the people to show their expression and emotions. The camera moves from face to face in separate shots whilst keeping the rule of being on the same side to show that the person is still looking at the person opposite.