Angle Relationships with Parallel Lines and Transversals

Front

What are alternate interior angles?

Back

Angles that lie between two parallel lines and on opposite sides of a transversal.

Front

Name an example of alternate interior angles.

Back

If angle 3 is one angle, then angle 5 is its alternate interior angle.

Front

What are alternate exterior angles?

Back

Angles that lie outside two parallel lines and on opposite sides of a transversal.

Front

Name an example of alternate exterior angles.

Back

If angle 1 is one angle, then angle 8 is its alternate exterior angle.

Front

What are vertical angles?

Back

Angles that are opposite of each other when two lines intersect.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines in relation to a transversal.

Front

Name an example of corresponding angles.

Back

If angle 3 is one angle, then angle 7 is its corresponding angle.