1. 2-3: Proving Theorems

2. Reasons used in Proofs Given information Definitions Postulates (Algebraic Properties included) Theorems that have already been proved

3. Theorem 2-1: The Midpoint Theorem – If M is the midpoint of AB, then AM = ½ AB and MB = ½ AB Let’s Look at Proof on page 43

4. Theorem 2-2: The Angle Bisector Theorem – If ray BX is the bisector of <ABC, then m < ABX = ½ m <ABC and m <XBC = ½ m < ABC Prove on your own

5. Look at Example 2 on page 44

6. Classwork Pg 45: 1-10 together

7. Homework Pg 46: 1-8, 10-18, 19 study for quiz over 2.1-2.3