# Alice Adjusts Transversals, Parallel Lines, Angles: Protractor Version

Parallel lines never intersect.
For this reason, parallel lines have special properties. Let's investigate what happens when you CUT parallel lines with another line.

## The line that cuts parallel lines is called a transversal. This is a vocab word to know.

## In this app, a transversal intersects 2 parallel lines. Use the points and slider to move them around. Then, use the protractor to find the measure of the 8 angles shown. Record them too.

Notice anything interesting? Describe!