Angle 2 is an alternate exterior angle to angle 8 so if 2 parallel lines are cut by a transversal, then the pair of alternate exterior angles have the same measure and are congruent so angle 8 is 115 degrees as angle 2. Since angle 7 is opposite of angle 8 then they both add up to 180 because they form a linear pair so they are supplementary and supplementary angles add up to 180 so 180- 115 is 65 so angle 7 is 65 degrees. Hopes it helps
