2.6 Parallel lines and Transversal Review

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.

Front

What is a transversal?

Back

A transversal is a line that intersects two or more lines at different points.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of the transversal and inside the two lines.

Front

What is the relationship between alternate interior angles when the lines are parallel?

Back

When the lines are parallel, alternate interior angles are congruent.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on different lines when a transversal crosses them.

Front

What is the relationship between corresponding angles when the lines are parallel?

Back

When the lines are parallel, corresponding angles are congruent.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that are on opposite sides of the transversal and outside the two lines.

Front

What is the relationship between alternate exterior angles when the lines are parallel?

Back

When the lines are parallel, alternate exterior angles are congruent.

Front

What are consecutive interior angles?

Back

Consecutive interior angles are pairs of angles that are on the same side of the transversal and inside the two lines.

Front

What is the relationship between consecutive interior angles when the lines are parallel?

Back

When the lines are parallel, consecutive interior angles are supplementary (they add up to 180 degrees).