Angle Relationships

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal to each other.

Front

What are adjacent angles?

Back

Angles that share a common side and vertex.

Front

If m∠1 = 30°, what is m∠3 if they are supplementary?

Back

m∠3 = 150°.

Front

If two angles are complementary and one angle measures 40°, what is the measure of the other angle?

Back

50°.

Front

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

Back

180°.

Front

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

Back

90°.

Front

If m∠A + m∠B = 180°, what type of angles are A and B?

Back

Supplementary angles.

Front

If m∠C + m∠D = 90°, what type of angles are C and D?

Back

Complementary angles.