Question

Please help me I can’t figure out how to solve this problem

Answer 1

1. because
line A // B
so m1 = 33 。
2. look at the line A
m1+m2+57。=180。
so 33。+m2+57。=180。
m2 =90。
3. look at the triangle
m2+m3+33。=180。
so m3=57。