Parallel Lines and Transversals

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 at least two other lines.

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

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

Front

What are alternate exterior angles?

Back

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

Front

What does it mean for angles to be supplementary?

Back

Two angles that add up to 180 degrees.

Front

What does it mean for angles to be congruent?

Back

Two angles that have the same measure.

Front

If angle B measures 120 degrees, what is the measure of angle Q if they are corresponding angles?

Back

120 degrees.

Front

If angle S and angle B are supplementary and angle B measures 120 degrees, what is the measure of angle S?

Back

60 degrees.

Front

If angle A and angle C are supplementary, and angle A measures 70 degrees, what is the measure of angle C?

Back

110 degrees.