3.5 Properties of Parallel Lines

Question 1

Corresponding Angles Postulate

Answer 1

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

Question 2

Alternate Interior Angles Theorem

Answer 2

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

Question 3

Consecutive Interior Angles Theorem

Answer 3

If two parallel lines are cut by a transversal, then the pairs of consecutive interior angles are supplementary.

Question 4

Alternate Exterior Angles Theorem

Answer 4

If two parallel lines are cut by a transversal, then the pairs of alternate exterior angles are congruent.

Question 5

Perpendicular Transversal Theorem

Answer 5

If a transversal is perpendicular to one of two parallel lines, then it is perpendicular to the second.

Question 6

Transversal

Answer 6

A line that intersects two or more coplanar lines at different points.