Part 1 of Essay
The actors in ancient tragedies were hired and paid by the state and assigned to the tragic poets probably by lot. By the middle of the fifth century three actors were required for the performance of a tragedy. In descending order of importance of the roles they assumed they were called protagonist ‘first actor’ ....

Part 2 of Essay
.... The playing of multiple roles, both male and female, was made possible by the use of masks, which prevented the audience from identifying the face of any actor with one specific character in the play and helped eliminate the physical incongruity of men impersonating women. The masks with subtle variations also helped the audience identify the sex age and social rank of the characters. The fact that the chorus remained in the orchestra throughout the play, and sang and danced choral songs between the episodes. Al ....