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

Back

60 degrees (90 - 30 = 60).

Front

If angle B is 120 degrees, what is the measure of its supplementary angle?

Back

60 degrees (180 - 120 = 60).

Front

Are two angles that measure 45 degrees complementary, supplementary, or neither?

Back

Complementary (45 + 45 = 90).

Front

What is the relationship between two angles that add up to 180 degrees?

Back

They are supplementary angles.

Front

If angle C is 75 degrees, what is the measure of its complementary angle?

Back

15 degrees (90 - 75 = 15).

Front

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

Back

30 degrees (180 - 150 = 30).

Front

What do you call angles that are adjacent and add up to 180 degrees?

Back

Supplementary angles.

Front

If two angles are complementary, what is the sum of their measures?

Back

90 degrees.