Question

In the figure below, lines 1 and 2 are parallel. Lines 3 and 4 are also parallel.

Answer 1

I don’t see a diagram, but I assume that you must use these things.

Opposite interior angles. (Which are equal)
Same side interior angles (which are supplementary or they add up to 180)
Corresponding angles (which are equal)
Vertical angles (which are equal)