Angles: Complementary and Supplementary Concepts

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

Back

60 degrees.

Front

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

Back

60 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal in measure.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles formed when a transversal crosses two parallel lines, and they are equal.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on two parallel lines cut by a transversal, and they are equal.

Front

If angle A is 45 degrees, what is the measure of angle B if they are complementary?

Back

Angle B is 45 degrees.

Front

If angle C is 75 degrees, what is the measure of angle D if they are supplementary?

Back

Angle D is 105 degrees.

Front

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

Back

90 degrees.