Final answer:
Ancient Greek theatre masks included wigs attached for hair, made from materials such as wood, cork, or linen, which are known through ancient artwork and literary sources.
Step-by-step explanation:
In ancient Greek theatre, masks with wigs attached were used to portray different characters. These masks often included hair, which was an essential part of the mask, giving it a distinctive appearance in addition to the exaggerated facial features. The masks were made of materials like lightweight wood, cork, or linen, but due to their fragility, no actual masks have survived to the present. Instead, we understand their appearance from ancient artwork and literary descriptions. The masks were designed with wide mouth openings to aid in projecting the actor's voice across the amphitheater. Actors could portray various roles, including different genders, simply by changing masks.