Types of Angles

Front

What is a supplementary angle?

Back

Two angles that add up to 180 degrees.

Front

What is an adjacent angle?

Back

Two angles that share a common side and vertex.

Front

What is a vertical angle?

Back

Angles that are opposite each other when two lines intersect.

Front

What is a complementary angle?

Back

Two angles that add up to 90 degrees.

Front

If angle A is 30 degrees, what is its complementary angle?

Back

60 degrees, because 30 + 60 = 90.

Front

If angle B is 120 degrees, what is its supplementary angle?

Back

60 degrees, because 120 + 60 = 180.

Front

What are vertical angles?

Back

Vertical angles are equal in measure.

Front

If two angles are adjacent and one measures 45 degrees, what could the other angle measure if they are supplementary?

Back

135 degrees, because 45 + 135 = 180.

Front

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

Back

90 degrees.

Front

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

Back

180 degrees.