geometry proving parallel lines multiple choice question help

if <3 is approx. equal to <4    which lines must be parallel?
a.  line d and line e

For what value of x is c || d?

a) 21

d) 53
Which theorem or postulate can you use to prove that KR || MT using the markings in the diagram?

a) Converse of Same-side interior angles theorem

b) Converse of Alternate interior angles theorem

c) Converse of Corresponding angles postulate

d) of Exterior angles Theorem

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