Theater
The theater seen in the picture is a Proscenium Arch Stage.
1. This is known as the Proscenium.
2. not listed.
3. This is off stage, where the audience cannot see and actors can stand when waiting for cues.
4. This could be labeled as the curtain, or Stage Right.
5. This is known as the setting line, where most of the action takes place during the play.
6. This is the auditorium where the audience sits.
7. This is known as the border, it hides all of the lights and other accessories used on the stage.