Parallel lines cut by a transversal

Front

What is the angle relationship when two parallel lines are cut by a transversal and the angles are on opposite sides of the transversal and inside the parallel lines?

Back

Alternate Interior Angles

Front

What is the angle relationship when two parallel lines are cut by a transversal and the angles are on the same side of the transversal and inside the parallel lines?

Back

Same Side Interior Angles

Front

What is the angle relationship when two parallel lines are cut by a transversal and the angles are on opposite sides of the transversal and outside the parallel lines?

Back

Alternate Exterior Angles

Front

What is the angle relationship when two parallel lines are cut by a transversal and the angles are on the same side of the transversal and outside the parallel lines?

Back

Same Side Exterior Angles

Front

What are vertical angles?

Back

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

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

If angle 1 is 70°, what is the measure of angle 2 if angle 1 and angle 2 are corresponding angles?

Back

70° (Corresponding angles are equal).

Front

If angle 3 is 110°, what is the measure of angle 4 if angle 3 and angle 4 are alternate interior angles?

Back

110° (Alternate interior angles are equal).

Front

If angle 5 is 52°, what is the measure of angle 6 if angle 5 and angle 6 are same side interior angles?

Back

128° (Same side interior angles are supplementary).