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Luv2Teach
If d is a transversal of parallel v and w, the angles 3 and 5 are alternate interior.  Therefore, they are congruent.  Angle 3 and 5 both measure 58.
Because of the given information angles 3 and 5 are considered alternate interior angles. Think alternate because they are on opposite sides and interior because they are on the inside.

These types of angles are congruent, therefore if m<5 = 58, then m<3 would also = 58.