Question

State the assumption you would make to start an indirect proof of the statement. (Lesson 5-4)

If two lines are cut by a transversal and a pair of alternate interior angles are congruent, then the two lines are parallel.

Answer 1

The assumption we would make to start an indirect proof of the statement "If two lines are cut by a transversal and a pair of alternate interior angles are congruent, then the two lines are parallel" is that the two lines are not parallel.