Today we learned about the relationship between angles and parallel lines cut by a transversal.
We covered Postulate 3-1 and Theorems 3-1 through 3-3 (thm 3-4 tomorrow).
We proved theorems 3-1 and 3-2. Hope you took all took good notes. You are expected to know how to prove all of these theorems foe a future exam. The book provides 1 proof and part of another in the exercises.
I gave everyone a worksheet and did #1-9 together. In each class we argued (discussed) problem #9. You still need to figure out WHY the unknown angles are also right (angles).
Later!
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