# Vertical angles and Angles Formed by Parallel Lines and a Transversal

- Author:
- debbie.steffen, Brian Connor

- Topic:
- Angles

This applet shows the relationships between angles formed by a pair of parallel lines and a transversal.

How would you describe vertical angles to someone else?

What type of angles are on the opposite side of the transversal and the outside of the parallel lines?

What angles are inside the parallel lines and on the same side of the transversal?

What angles are on opposite sides of the transversal, and on the inside of the parallel lines

What type of angles are in the same position relative to the transversal and their line?