Parallel Lines Cut by a Transversal

Front

What are Vertical Angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

What are Alternate Interior Angles?

Back

Alternate interior angles are pairs of angles that lie between two parallel lines and on opposite sides of a transversal. They are equal in measure.

Front

What are Corresponding Angles?

Back

Corresponding angles are pairs of angles that are in the same position on two parallel lines in relation to a transversal. They are equal in measure.

Front

What are Same-side Interior Angles?

Back

Same-side interior angles are pairs of angles that lie between two parallel lines and on the same side of a transversal. They are supplementary, meaning they add up to 180 degrees.

Front

If angle 1 is 135 degrees, what is the measure of angle 3 if they are corresponding angles?

Back

Angle 3 is also 135 degrees.

Front

If angle 2 is 56 degrees, what is the measure of the alternate interior angle?

Back

The alternate interior angle is also 56 degrees.

Front

What is the relationship between consecutive interior angles?

Back

Consecutive interior angles are supplementary, meaning they add up to 180 degrees.

Front

How do you find the measure of an angle when given its corresponding angle?

Back

The measure of the corresponding angle is equal to the given angle.

Front

What is the sum of the measures of vertical angles?

Back

The sum of the measures of vertical angles is always equal to 360 degrees, but each pair is equal to each other.

Front

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

Back

Alternate exterior angles are equal in measure.