A stage that extends into the house where the audience sit on on three sides of the playing area, and the stage is connected to the backstage area by its upstage area,

A simple indoor performance space with plain black walls and a level floor, typically designed to provide flexibility in the configuration of the stage and the audience seating.

Any area which is not considered playing space or backstage area. It is where the audience sits for the play, but also includes the lobby, coat check, ticketing counters, and restrooms.

The type of theatre with an opening in the wall which stands between stage and auditorium. It is like a picture frame through which the audience sees the play.

A stage without a proscenium arch and seats on three or four sides, allowing close association between actors and spectators.

Area backstage to the right and left of the playing area.

A building used for the presentation of plays.

The complete scenery for a play or musical.

The imaginary wall through which the audience watches the action of the play.