Angle Pairs

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

If angle A is 27 degrees, what is the measure of its complementary angle?

Back

63 degrees (90 - 27 = 63).

Front

If angle B is 147 degrees, what is the measure of its supplementary angle?

Back

33 degrees (180 - 147 = 33).

Front

If angle 1 and angle 2 are adjacent and angle 1 measures 40 degrees, what is the measure of angle 2 if they are complementary?

Back

50 degrees (90 - 40 = 50).

Front

If angle 3 is 112 degrees, what is the measure of its supplementary angle?

Back

68 degrees (180 - 112 = 68).

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal in measure.

Front

If two angles are supplementary and one angle measures 74 degrees, what is the measure of the other angle?

Back

106 degrees (180 - 74 = 106).