two intersecting lines create four angles with the same vertex, labeled A, B, C, and D. Angle B is adjacent to angle A and angle C. Find m-angle A if m-angle ac = 75°
Since angles A and C are adjacent and together add up to 75°, we can find the measure of angle A by subtracting the measure of angle C from 75°.
m(angle A) = 75° - 75° = 0°
Therefore, the measure of angle A is 0°.