The event which is associated with the peripeteia (or turn of events) in the play is Teiresias prophecy. It changed the whole course of the drama afterwards.
A hyperbole is an extreme literary exaggeration. Such as, "I'm so hungry, I could eat a horse!" Obviously one person could not eat a horse, but instead uses a hyperbole to express his/her hunger.
Depends on the person who is teaching and if it is a 21 word thingy or it may be a paragraph.