## 3.2 Angles Formed by Parallel Lines and Transversals

Corresponding Angles Postulate-If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent.

Alternate Interior Angles Theorem-If two parallel lines are cut by a transversal, then the two pairs of alternate interior angles are congruent.Alternate Exterior Angles TheoremIf two parallel lines are cut by a transversal, then the two pairs of alternate exterior angles are congruentSame-side Interior Angles TheoremIf two parallel lines are cut by a transversal, then the two pairs of same-side interior angles are supplementary.

Corresponding Angles Postulate-If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent.

Alternate Interior Angles Theorem-If two parallel lines are cut by a transversal, then the two pairs of alternate interior angles are congruent.Alternate Exterior Angles TheoremIf two parallel lines are cut by a transversal, then the two pairs of alternate exterior angles are congruentSame-side Interior Angles TheoremIf two parallel lines are cut by a transversal, then the two pairs of same-side interior angles are supplementary.