In the figure, p || q. you must prove that ∠4 is supplementary to ∠7. what is the reason for the highlighted statement in the proof?

substitution property of equality

for parallel lines cut by a transversal, corresponding angles are congruent.

congruent supplements theorem

vertical angles theorem

The best and most correct answer among the choices provided by the question is the second choice .

To prove that ∠4 is supplementary to ∠7, we must use ""For parallel lines cut by a transversal, corresponding angles are congruent."

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