Ayo can someone help me with all of them?

Need on this geometry question. explain how you did it.

What rotation was applied to triangle def to create d’e’f’?

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site