Perseus was sent to slay Medusa and bring back her head.
King Polydectes
Polydectes sent him because he wanted to marry his mother Danae.
Medusa
Medusa was once very beautiful but a man was sent out to kill her and she asked for Athena's protection but Athena refused and Athena cursed her. Medusa couldn't kill women so she was sent to a chamber (that is now hers) were no women could go. every man that ever went in there never came back out.
No, Medusa did not kill Eurdice.
He was the ruler of the island of Seriphos, and the king who sent Perseus on the quest to kill Medusa and bring back her head.
The Medusa was killed by Perseus
No, they did not. The hero Perseus decapitated Medusa.
Polydectes.
Athena didn't kill Medusa. Perseus is the hero who did that. Athena only turned Meduas into a monster.
There was no purpose for either Medusa or Perseus. Medusa was the only mortal Gordon (dreadful female creatures) whose eyes turned people to stone. That is all there was to her. She probably liked to just mind her own business. Perseus was sent to kill her and fetch her head by a king. The king wanted to get rid of him and thought he would be killed by Medusa. Perseus managed to kill her thanks to the help of the gods Zeus, Hermes and Athena.
He did not, Perseus was sent to fetch the head of Medusa by King Polydektes of Seriphos.
The Greek hero Perseus killed Medusa. He took his reflecting mirror and shined it to Medusa. Then, she cut off her head and she threw it into a nearby pond.