Angle Relationships

Front

What are corresponding angles?

Back

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

Front

What are alternate interior angles?

Back

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

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 exterior angles?

Back

Alternate exterior angles are pairs of angles that are on opposite sides of the transversal and outside the two parallel lines. They are equal in measure.

Front

If Angle 1 and Angle 5 are corresponding angles, what can be said about their measures?

Back

Angle 1 and Angle 5 are equal in measure.

Front

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

Back

The alternate interior angles are equal in measure.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal in measure.

Front

Given two parallel lines cut by a transversal, if Angle 3 measures 50°, what is the measure of Angle 6?

Back

Angle 6 also measures 50° because they are alternate interior angles.

Front

If Angle 4 is 70°, what is the measure of its vertical angle?

Back

The vertical angle to Angle 4 is also 70°.

Front

What is the measure of the missing angle if one angle is 39° and they are supplementary?

Back

The missing angle measures 141° because supplementary angles add up to 180°.