Parallel Lines Cut by a Transversal

Front

What are Corresponding Angles?

Back

Angles that are in the same position on two parallel lines cut by a transversal. They are equal in measure.

Front

What are Alternate Interior Angles?

Back

Angles that are on opposite sides of the transversal and inside the two parallel lines. They are equal in measure.

Front

What are Alternate Exterior Angles?

Back

Angles that are on opposite sides of the transversal and outside the two parallel lines. They are equal in measure.

Front

What are Vertical Angles?

Back

Angles that are opposite each other when two lines intersect. They are equal in measure.

Front

What are Supplementary Angles?

Back

Two angles that add up to 180 degrees.

Front

What are Congruent Angles?

Back

Angles that have the same measure.

Front

What is a Transversal?

Back

A line that intersects two or more lines at different points.

Front

When two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

They are congruent (equal in measure).

Front

When two parallel lines are cut by a transversal, what can be said about the alternate interior angles?

Back

They are congruent (equal in measure).

Front

What is the relationship between supplementary angles formed by a transversal?

Back

They add up to 180 degrees.