Why did ancient Greek actors wear masks?

Ancient Greek actors wore masks for several reasons:

1. Amplify the actor's voice: The masks had built-in megaphones that helped project the actor's voice to reach the entire audience in large outdoor theaters.
2. Enhance visibility: The masks made it easier for the audience to see and distinguish the characters from a distance, especially since actors often wore elaborate costumes.
3. Transform characters: By changing masks, actors could quickly switch between multiple characters in the same play without changing costumes, allowing for a more dynamic and engaging performance.
4. Express emotions: The exaggerated facial expressions on the masks helped convey emotions to the audience, as Greek plays often focused on the emotions and struggles of the characters.