The __________ are used to present using overhead projectors.

The Acetate film transparent sheet are used to present using overhead projectors. Acetate Paper is a transparent material that is made by reacting cellulose with acetic acid in the presence of sulfuric acid. Manufacturers form it into sheets that are 0.1 mm to 0.5 mm thick. This nonflammable mildew-proof material is easy to dye and is available in many colors.