Since angle A and angle C are adjacent and angle C is 75°, angle A must be supplementary to angle C. Therefore, angle A must be equal to 180° - 75° = 105°.
Therefore, the answer is A. 105°.
Two intersecting lines create four angles with the same vertex, labeled A, B, C, and D. Angle B is adjacent to ∠A and ∠C. Find m∠A if m∠C=75°.
A. 105°
B. 15°
C. 75°
D. 180°
1 answer
1 answer