Answer:
Flat
Explanation:
Flats are painted flat piece of theatrical scenery. It is positioned on the stage to give appearance of various backgrounds. Flats are hard covered and soft covered. Usually flats are built in standard size of 2.4 m, 3.0 m and 3.7 m. They are also kept at the sides of stage, when kept at sides it is called wings. Flats are made of wood.