Complementary Supplementary and Vertically Opposite Angles Equations

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 vertically opposite angles?

Back

Vertically opposite angles are the angles opposite each other when two lines cross. They are always equal.

Front

If one angle measures 30 degrees, what is its complementary angle?

Back

60 degrees (90 - 30 = 60).

Front

If one angle measures 110 degrees, what is its supplementary angle?

Back

70 degrees (180 - 110 = 70).

Front

What is the measure of angle x if angle 1 is 45 degrees and they are complementary?

Back

Angle x is 45 degrees (90 - 45 = 45).

Front

What is the measure of angle y if angle 2 is 120 degrees and they are supplementary?

Back

Angle y is 60 degrees (180 - 120 = 60).

Front

If two angles are complementary and one measures 25 degrees, what is the other angle?

Back

65 degrees (90 - 25 = 65).

Front

If two angles are supplementary and one measures 90 degrees, what is the other angle?

Back

90 degrees (180 - 90 = 90).

Front

What is the relationship between vertically opposite angles?

Back

Vertically opposite angles are equal in measure.