The 180 degree rule states that a camera should remain on one side of an imaginary line between two subjects being filmed to avoid confusing viewers. It ensures that the left and right positioning of subjects stays consistent. Crossing the axis by filming from the other side is called a reverse angle. Examples include maintaining the same side of a car during a chase or keeping actors on the same side relative to each other. Match on action is a continuity editing technique where shots are edited together to make an action like opening a door appear fluid by matching the beginning and end of the action across cuts.

1. 180 Degree Rule
A rule stating that a camera should be placed somewhere inside 180
degrees on a particular side of the invisible line of a shot containing
two people filmed in sequence. If the camera crosses the line it
means you’re breaking the 180 degree rule and so, confusion results
for the film viewers, because it makes it look like the people are
switching places as one watches the film.
Rules of the 180 degree rule
 Basic rules meant that two characters should always have the
same left and right relationship to each other.
 The camera crosses the axis connecting two subjects, where it
called “Crossing the line” and where a new shot is called the
reverse angle.
Examples of the 180 degree
rules
 The 180 degree rules are normally shown in Car chases. So if
the car leaves the frame of the right side, in the next shot it
should be on the left side.
 This image on the next slide represents the 180 degree rule in a
relationship between two actors.

2. Match on action
Match on Action-Match on Action is a continuity editing technique.
For example, it can involve a person opening a door like in the video
presentation of Match on Action that we have also made for our
“open door”. This can be done in three simple shots; One to show
the person walking towards the door, another shot zoomed on the
person’s hand on the door, and the final shot to show the person
coming through on the other side. These shots are all then edited
together to make it look continuous and as if it is all happening
fluently and naturally. This technique can be done with any action, it
is just to portray a false sense of continuity to the viewer.