the actors in ancient greek theatre wore masks because
Theatre of ancient Greece In a large open-air theatre, like the Theatre of Dionysus in Athens, the classical masks were able to create a sense of dread in the audience creating large scale panic, especially since they had intensely exaggerated facial features and expressions.[18] They enabled an actor to appear and reappear in several different roles, thus preventing the audience from identifying the actor to one specific character. Their variations help the audience to distinguish sex, age, and social status, in addition to revealing a change in a particular character's appearance, e.g. Oedipus after blinding himself.[19] Unique masks were also created for specific characters and events in a play, such as The Furies in Aeschylus' Eumenides and Pentheus and Cadmus in Euripides' The Bacchae. Worn by the chorus, the masks created a sense of unity and uniformity, while representing a multi-voiced persona or single organism and simultaneously encouraged interdependency and a heightened sensitivity between each individual of the group. Only 2-3 actors were allowed on the stage at one time, and masks permitted quick transitions from one character to another. There were only male actors, but masks allowed them to play female characters.
Greek chorus Plays of the ancient Greek theatre always included a chorus that offered a variety of background and summary information to help the audience follow the performance. They commented on themes, and, as August Wilhelm Schlegel proposed in the early 19th century to subsequent controversy, demonstrated how the audience might react to the drama.[3] According to Schlegel, the Chorus is "the ideal spectator", and conveys to the actual spectator "a lyrical and musical expression of his own emotions, and elevates him to the region of contemplation".[4] In many of these plays, the chorus expressed to the audience what the main characters could not say, such as their hidden fears or secrets. The chorus often provided other characters with the insight they needed.[citation needed]