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° .(1 point)
Since angle B is adjacent to angle A and angle C, it means that angle A and angle C are supplementary angles. Therefore, if angle C is 75°, then angle A is 180° - 75° = <<180-75=105>>105°.
