Use your textbook (p. 128) to define the following terms: transversal, corresponding angles, alternate interior angles, and alternate exterior angles.

At the left of the page there are 8 angles. Their measures are listed. Make a list of possible matches between the angle letter names and their number names. Copy these questions into your notes.
1. If two parallel lines are cut by a transversal, then corresponding angles are _______________________
2. If two parallel lines are cut by a transversal, then alternate interior angles are ______________________
3. If two parallel lines are cut by a transversal, then alternate exterior angles are ______________________
The BIG one: The Parallel Line Conjecture:
4. If two parallel lines are cut by a transversal, then corresponding angles are _____________________, alternate interior angles are ______________________, and alternate exterior angles are ______________________.
The Converse of the Parallel Line Conjecture:
5. If two lines are cut by a transversal to form pairs of congruent corresponding angles, congruent alternate interior angles, or congruent alternate exterior angles, then the lines are ___________________________.