If angle 4 is 42° and lines M and N are parallel, give a reason why angle 5 is also 42°. A. Angle 4 and angle 5 are interior angles, so their measures must be the same. B. Angle 4 and angle 5 are corresponding angles, so their measures are congruent. C. Angle 4 and angle 5 are alternate interior angles, so their measures must be the same. D. Angle 4 and 5 are vertical angles, so their measures are congruent.
