Angles: Complementary, Supplementary, and Vertical

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are vertical angles?

Back

Angles that are opposite of each other when two lines intersect.

Front

Which angles are adjacent angles?

Back

Angles that share a common side and a common vertex.

Front

If ∠A + ∠B = 90°, what type of angles are ∠A and ∠B?

Back

Complementary angles.

Front

If ∠C + ∠D = 180°, what type of angles are ∠C and ∠D?

Back

Supplementary angles.

Front

What is the measure of the missing angle if one angle is 60° in a pair of complementary angles?

Back

30°.

Front

If two angles are vertical angles, what can we say about their measures?

Back

They are equal.

Front

If ∠1 and ∠2 are supplementary and ∠1 = 110°, what is the measure of ∠2?

Back

70°.

Front

What is the sum of the measures of complementary angles?

Back

90°.