1. 2.4 Vertical Angles

2. Vertical Angles: Two angles are vertical if they are not adjacent and their sides are formed by two intersecting lines

3. Linear Pair: Two adjacent angles are a linear pair if their non-common sides are on the same line (the two outside rays form a straight line)

4. Linear Pair Postulate: If two angles form a linear pair, then they are supplementary

5. Vertical Angles Theorem: Vertical angles are congruent

6. Homework Assignment # 10 Textbook page 78 Problems 1-8 (do not write these problems) Problems 10-56 even (you will not have to write these problems if you work QUIETLY ON YOUR ASSIGNMENT until you are dismissed