Answer:
it is wave inversion
Explanation:
your answer is c. motion
Crazy Guy what do uh mean ?
b
50°
Complementary angles add up to 90°.
Supplementary angles add up to 180°.
Vertical angles are equal.
A + B = 90°
B = C
C = 180° − 140°
C = 40°
B = 40°
A = 50°
attached below