The stage has an angular shape that resembles an isosceles triangle. The sides of the stage are straight lines that form an acute angle at the vertex. It also has a height that extends from the vertex to the base. The screens: The screens that surround the stage have rectangular and square shapes. Rectangular screens have two pairs of parallel and congruent sides and four right angles. Square screens have four equal, perpendicular sides and four right angles. The screens also have a symmetry with respect to the vertical axis that passes through the center of the stage. The lights that illuminate the studio create contours that emphasize the geometric shapes of the stage and screens. Lights are lines that have a length and a direction. Some lights are horizontal, some are vertical, and some are oblique. The lights also create intersections and angles between them.