After the quiz you worked on the proofs of theorems 2-4, 2-5, and 2-8. Tomorrow we will post them on the board and discuss the different possibilities.
You will get your quiz back tomorrow. Guaranteed!
Study for your test on Friday: All proofs. Most of them will be fill-in the blank. If I do decide to put a proof that you have to write on your own, it will be a short one (3 or 4 steps).