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 same-side interior angles?

Back

Angles that are on the same side of the transversal and inside the two parallel lines.

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

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

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines cross; they are always equal.

Front

If angle 1 = 27°, what is the measure of angle 4 if they are corresponding angles?

Back

Angle 4 = 27°.

Front

If angle 5 = 124°, what is the measure of angle 3 if they are same-side interior angles?

Back

Angle 3 = 56°.

Front

What is the relationship between angle 2 and angle 6 if they are alternate interior angles?

Back

Angle 2 = Angle 6.