For the answer to the question above,
You question isn't very clear describing the diagram but I think I have got it,
I'll include the steps
1/2
----
3/4
../
5/6
----
7/8
∠4 = 180 - ∠3 (supplementary ∠'s)
∠4 = 52
∠8 = ∠4 (corresponding ∠'s)
∠8 = 5
I hope my answer helped you, have a nice day!