Matching Pairs 5382093Online version 5382093 by Stevi Wilson 1 masking (scenic) 2 Gobo 3 Wagon 4 Scrim 5 thrust stage 6 raked stage 7 Revolve 8 ground row 9 proscenium arch 10 Sightlines 11 Blackout 12 arena stage 13 Cyclorama is a mobile platform that is used to support and transport movable, three-dimensional theatrical scenery visual axis is a normally unobstructed line of sight between an intended observer a large curtain or wall, often concave, positioned at the back of the apse (semicircular recess) n the Middle Ages and early Modern era typically sloped upwards away from the audience. is a lightweight woven cotton fabric used for stage effects is a thin piece of metal, wood, or glass used to modify the shape of the projected light. A piece of theatrical scenery used to conceal a part of the stage from the audience. when all of the stage lights go out in a theater to indicate the passage of time or to mark the end of an act or scene. A piece of scenery sitting on the floor upstage to create the sense of a horizon with the sky beyond. an acting area, which may be raised or at floor level, is completely surrounded by the audience. is one that extends into the audience on three sides and is connected to the backstage area by its upstage end. device for scene changes, or shifts, by which three or more settings are constructed on a turntable around a central pivot is a structure in front of the stage that frames the action of the play.