If you are proving a congruence of triangles then you need to match the corresponding parts to the triangle you are proving congruent.
BAC would then be congruent to MJR because of the corresponding angles
B is the same angle as M
A is the same angle as J
C is the same angle as R
This is pretty simple once you think about it, you are probably just making it harder than it needs to be :) So, all you really have to do is plug in the numbers and see which statement is true. So, for the first one, you should work it out with me in the comments. Sorry lol I don't really like giving straight answers. lol
Answer:
123.5
Step-by-step explanation:
Answer:

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