7.2 - Complementary and Supplementary 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 ∠1 and ∠2 are complementary, and ∠1 measures 30 degrees, what is the measure of ∠2?

Back

∠2 measures 60 degrees.

Front

If ∠3 and ∠4 are supplementary, and ∠3 measures 110 degrees, what is the measure of ∠4?

Back

∠4 measures 70 degrees.

Front

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

Back

The sum is 90 degrees.

Front

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

Back

The sum is 180 degrees.

Front

If two angles are neither complementary nor supplementary, what can you say about their measures?

Back

Their measures do not add up to 90 or 180 degrees.

Front

Find the value of x if x + 30 = 90.

Back

x = 60.

Front

Find the value of x if x + 50 = 180.

Back

x = 130.

Front

If ∠A and ∠B are complementary and ∠A = 45 degrees, what is ∠B?

Back

∠B = 45 degrees.