geometry proving parallel lines, multiple choice question help

Which justification can be used in blank a?

a) Same-side interior angles theorem

b) Corresponding angles postulate

c) Converse of same-side interior angles theorem

d) Given

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Which statement can be used in blank b?

a. 1 and 2 are supplementary.

b. 1 and 2 are a linear pair.

c. 2 and 3 are a linear pair.

d. 2 and3 are supplementary.

Answer:_______

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Which statement can be used in blank c?

a) Definition of linear pair

b ) Linear pair postulate

c) Definition of supplementary

D) Same-side interior angles theorem

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Which statement can be used in blank d?Which statement can be used in blank d?

a) angle 1 is approx. equal to angle 2

b) angle 1 is supplementary to angle 2

c) angle 2 is supplementary to angle 3

d) angle 2 is approx. equal to angle 3

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Which statement can be used in blank e?

a) Converse of the same-side interior angles theorem

b) Converse of the corresponding angles postulate

c) Converse of the same-side exterior angles theorem

d) Converse of the alternate interior angles theorem