Answer:
A = 103°; B = 77°; C = 46°
Step-by-step explanation:
A + 45° + 32° = 180°
A + 77° = 180°
A = 180° - 77°
A = 103°
A + B = 180°
103° + B = 180°
B = 180° - 103°
B = 77°
B + C + 57° = 180°
77° + 57° + C = 180°
134° + C = 180°
C = 180° - 134°
C = 46°
I hope I've helped you.
