Complementary, Supplementary, and Transversal Angles

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 sum of angles in a straight line?

Back

180°.

Front

What is the sum of angles in a right angle?

Back

90°.

Front

If two angles are complementary, what is their relationship?

Back

They add up to 90°.

Front

If two angles are supplementary, what is their relationship?

Back

They add up to 180°.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What is a transversal?

Back

A line that crosses two or more other lines.

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside the two lines.

Front

What are corresponding angles?

Back

Angles that are in the same position on two different lines cut by a transversal.