M3 Find Missing Angles

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

If angle A is 30 degrees, what is the measure of its complementary angle?

Back

60 degrees (90 - 30 = 60).

Front

If angle B is 150 degrees, what is the measure of its supplementary angle?

Back

30 degrees (180 - 150 = 30).

Front

Solve for x: x + 25 = 90

Back

x = 65.

Front

Solve for x: 2x + 30 = 180

Back

x = 75.

Front

Find the missing angle if one angle is 70 degrees and they are complementary.

Back

20 degrees (90 - 70 = 20).

Front

Find the missing angle if one angle is 110 degrees and they are supplementary.

Back

70 degrees (180 - 110 = 70).

Front

What is the sum of the measures of two complementary angles?

Back

90 degrees.

Front

What is the sum of the measures of two supplementary angles?

Back

180 degrees.