Unit 3: Parallel Lines Cut by a Transversal

Front

What are parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Front

What is a transversal?

Back

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

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines cut by a transversal.

Front

What are alternate interior angles?

Back

A pair of angles formed when a transversal intersects two parallel lines, located between the two lines but on opposite sides of the transversal.

Front

What are alternate exterior angles?

Back

Pairs of angles that are on opposite sides of the transversal and outside the two lines being intersected.

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal.

Front

What is the relationship between alternate interior angles when two parallel lines are cut by a transversal?

Back

Alternate interior angles are equal.

Front

What is the relationship between alternate exterior angles when two parallel lines are cut by a transversal?

Back

Alternate exterior angles are equal.

Front

If one of the alternate exterior angles is 90 degrees, what is the sum of the alternate exterior angles?

Back

The sum of alternate exterior angles is 180 degrees.

Front

What is the sum of the interior angles on the same side of the transversal?

Back

The sum of the interior angles on the same side of the transversal is 180 degrees.