Question

assume abc and def. if m 4 years ago

Answer 1

Hi and welcome to QuestionCove!

I assume this question has to do with the angle measures of (similar? congruent?) triangles. If that's the case, then you should keep in mind that all the angles of a triangle will add up to be 180.
So, for triangle abc, a=70, b = 47, so if a+b+c=180, then we know what the measure of c must be.
Then, if triangle def has a similar or congruent relationship with abc, we'll know that f has the same angle measure as its corresponding angle--I think that means, the same as c in this case.

Answer 2

I made a few assumptions, since it is hard to tell based on this limited information. Can you confirm the accuracy of anything I said or make corrections as needed?
In the future, please try to include as much information about the question you are asking about, which could include screenshots, written info, attachments, etc.