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 crosses two or more other lines in the same plane.

Front

What are alternate exterior angles?

Back

Angles that are on opposite sides of the transversal and outside the two lines.

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside the two lines.

Front

What are corresponding angles?

Back

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

Front

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

Back

They are equal.

Front

If angle 1 is 135 degrees, what is the measure of angle 3 if lines are parallel?

Back

Angle 3 is also 135 degrees.

Front

Name the alternate interior angle to angle 3 if angle 3 is 45 degrees.

Back

Angle 6 is the alternate interior angle to angle 3.

Front

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

Back

They are supplementary, meaning they add up to 180 degrees.

Front

If angle 2 is 65 degrees, what is the measure of angle 8?

Back

Angle 8 is 115 degrees if lines are parallel.