Angle Relationships Flashcard

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is an example of a pair of complementary angles?

Back

81° and 9°.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

Supplementary Angles are angles that add up to _____ degrees.

Back

180 degrees.

Front

What is the value of x if two angles are supplementary and one angle measures 80°?

Back

x = 100°.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

If one angle measures 45°, what is the measure of its complementary angle?

Back

The complementary angle measures 45°.

Front

Find x if the angles are complementary and one angle is 30°.

Back

x = 60°.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal in measure.

Front

Calculate m∠ABC if m∠ABD = 75° and m∠ABC is supplementary to m∠ABD.

Back

m∠ABC = 105°.