Answer:
The tone of the poem starts out calm, as it describes Medusa sleeping, then turns angrier after Perseus cuts Medusa's head off. Perseus was the son of Danae, who was going to be forced to marry Polydectes, unless Perseus could bring him the head of Medusa.
Explanation:
The story of Perseus and Medusa is told to teach various life lessons. ... His courage, strength, and intelligence was also the reason that Perseus saved Andromeda from the Cetus and returned home with her, slaying both Phineus and Polydectes with the head of Medusa by turning them into stone The theme of the story is to be a leader. Perseus being a leader was illustrated when Perseus killed Medusa the gorgon while she was sleeping. If Medusa was not the way she is, then she would not be killed.
