Find the measure of angle A, B, and C

Answer: is C
Step-by-step explanation: each triangles angles all added up is 180 degrees. Letter a 32+45= 77 so now you subtract 77 from 180 and get 103. For letter c the whole shape is one triangle so you have to add 57+45=102 subtract that from 180, but you aren’t finished you have to subtract out 32 and then C equals 46 degrees. For letter b 46+57= 103. 180-103 is 77 so therefore your answer is C)