Angle Relationships

Front

What are adjacent angles?

Back

Two angles that are next to each other.

Front

What are complementary angles?

Back

Two angles that together measure 90 degrees.

Front

What are supplementary angles?

Back

Two angles that together measure 180 degrees.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

If two angles are complementary, what is the measure of one angle if the other is 30 degrees?

Back

60 degrees.

Front

If two angles are supplementary, what is the measure of one angle if the other is 120 degrees?

Back

60 degrees.

Front

What is the measure of an angle that is 90 degrees?

Back

It is a right angle.

Front

What is the measure of an angle that is less than 90 degrees?

Back

It is an acute angle.

Front

What is the measure of an angle that is greater than 90 degrees but less than 180 degrees?

Back

It is an obtuse angle.