Parallel Lines

Front

What are corresponding angles?

Back

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

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

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

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect. They are congruent.

Front

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

Back

They are congruent.

Front

If angle 5 is 70 degrees, what is the measure of angle 1 if angle 1 is a corresponding angle?

Back

Angle 1 is also 70 degrees.

Front

If angle 2 is 110 degrees, what is the measure of angle 8 if angle 8 is an alternate exterior angle?

Back

Angle 8 is also 110 degrees.

Front

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

Back

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

Front

If angle 4 is 60 degrees, what is the measure of angle 6 if angle 6 is an alternate interior angle?

Back

Angle 6 is also 60 degrees.

Front

What is the sum of the measures of angles 3 and 5 if they are consecutive interior angles?

Back

The sum is 180 degrees.