180 degree rule

I found this digram explaining the 180 degree rule. I feel it makes it clear and easy to understand.

This is a diagram of the 180 degree rule. The green oval shows where the camera can go. The line in the middle shows that the camera can not go over the line. If the camera doee go over the middle line in to the red zone, this will mean that you are breaking the 180 degree rule. So always make sure that you are in the green zone.