## Lesson 3-1: Same-Side Exterior Angles

Lines *AB* and *FC* are parallel. Line *BC* is a transversal of the two parallel lines *AB* and *FC*.

Created with GeoGebra by Barbara Perez, 2006

## Directions !

1. Use points

*A, B,* and

*C* to move the lines. Observe the angle values.

2. ∠

*ABE* and ∠

*FCG* are same-side Exterior anlges. Name another pair of same-side Exterior angles.

3. Compare different pairs of same-side Exterior angles. What do you notice?

4. Prove your conjecture from question 3.