Parallel Lines

Front

What are parallel lines?

Back

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

Front

What are alternate exterior angles?

Back

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

Front

What are alternate interior angles?

Back

Angles that lie between the two parallel lines and on opposite sides of the transversal.

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines in relation to a transversal.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always congruent.

Front

If two parallel lines are cut by a transversal, what can be said about the alternate interior angles?

Back

They are congruent.

Front

If angle 5 is 70 degrees, what is the measure of angle 6 if angle 5 and angle 6 are alternate interior angles?

Back

Angle 6 is also 70 degrees.

Front

If angle 2 is 50 degrees, what is the measure of angle 8 if angle 2 and angle 8 are alternate exterior angles?

Back

Angle 8 is also 50 degrees.

Front

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

Back

They are congruent.

Front

If angle 1 is 120 degrees, what is the measure of angle 4 if angle 1 and angle 4 are alternate exterior angles?

Back

Angle 4 is also 120 degrees.