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Supplementary

100

Two angles are supplementary. The first has a measure of 121^o. What is the measure of the second angle?

59^o

200

Two angles are supplementary. The first angle has a measure of 45^o. What is the measure of the second angle?

135^o

300

Two angles are supplementary. The first angle has a measure of 85^o. What is the measure of the second angle?

95^o

400

Two angles are supplementary. The first angle has a measure of 3x^o. The second angle has a measure of 108^o. What is the measure of x?

24^o

500

Two angles are supplementary. The first angle has a measure of 2x + 15^o. The second angle has a measure of x + 75^o. What is the value of x?

30^o

Complementary

100

Two angles are complementary. What is their sum?

90^o

200

Two angles are complementary. The first angle has a measure of 50^o. What is the measure of the second angle?

40^o

300

Two angles are complementary. The first angle has a measure of 78^o. What is the measure of the second angle?

12^o

400

Two angles are complementary. The measure of the first angle is 62^o. What is the measure of the second angle?

28^o

500

Two angles are complementary. The measure of the first angle is 2x + 14^o. What is the measure of the second angle?

38^o

Vocabulary

100

An angle with a measure greater than 90^o.

Obtuse angle

200

Angles that form a right angle. Their sum is 90^o.

Complementary angles

300

Angles that form a straight line. Their sum is 180^o.

Supplementary angles

400

Two angles that have a common side and share a common vertex.

Adjacent angles

500

Two angles that have vertices opposite each other. They are created when two lines intersect. These angles are equal in measure.

Vertical angles