Answer:
I think C
Step-by-step explanation:
The answer is D. 42
A triangle equals 180 in total so what you would do it subtract 122 from 180 because 180 is also the angle of a straight line. You would get 58 then you add 58 and 80 to get 138. Subtract 138 from 180 and you get your answer of 42
What part do you have trouble with
Oh this is a hard one I will get back to you whenever I get it