2-2 Proving Lines Parallel
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theorem (2)
if 2 lines are perpendicular to the same line then they are parallel to each other
converse of alternate exterior angles theorem
if alternate exterior angles are congruent, then the lines are parallel
converse of alternate interior angles theorem
if alternate interior angles are congruent then then lines are parallel
converse of corresponding angles theorem
if corresponding angles are congruent then the lines are parallel
theorem (1)
if lines are parallel to the same line then they are parallel to each other
converse of same side interior angles postulate
if same side interior angles are supplementary, then the lines are parallel
