Angle Addition Postulate Practice

Front

What is the Angle Addition Postulate?

Back

The Angle Addition Postulate states that if point B is in the interior of angle AOC, then the measure of angle AOB plus the measure of angle BOC equals the measure of angle AOC.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

If ∠A + ∠B = 90°, what type of angles are ∠A and ∠B?

Back

∠A and ∠B are complementary angles.

Front

If ∠A + ∠B = 180°, what type of angles are ∠A and ∠B?

Back

∠A and ∠B are supplementary angles.

Front

What is the measure of an angle that is complementary to a 50° angle?

Back

The measure of the complementary angle is 40°.

Front

What is the measure of an angle that is supplementary to a 115° angle?

Back

The measure of the supplementary angle is 65°.

Front

How do you find the measure of an unknown angle in a triangle?

Back

The sum of the angles in a triangle is always 180°. You can find the unknown angle by subtracting the sum of the known angles from 180°.