Please help with this

•line a and b are parallel

•line m and n are parallel

•angles 1 and 3 are congruent (vertical angles)

•angle 3 and 5 are parallel (diagonals of an parallelogram are always congruent) it's the property of an parallelogram

•angle 5 and 7 are congruent (vertical angles)

So therefore angle 1 and 7 are congruent

Hope this helps

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong