Angle Relationships

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What are corresponding angles?

Back

Angles that are in the same position on different parallel lines cut by a transversal.

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

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

Front

If angle 1 is 30°, what is the measure of its complement?

Back

60°.

Front

If angle 2 is 120°, what is the measure of its supplement?

Back

60°.

Front

Which of these angles is NOT congruent to angle 5? (Angle 6, Angle 8, Angle 1, Angle 4)

Back

Angle 6.

Front

What is an example of a pair of complementary angles? (13° and 45°, 10° and 170°, 81° and 9°, 90° and 3°)

Back

81° and 9°.