1. Warm up #5

2. 1.5 Exploring Angles

3. Adjacent Angles  Angles with a common vertex and one common side  Think: side by side or right next to 1 2 4 3 Angles like 3 and 4 we call a LINEAR PAIR. Why do you think? How many degrees is EVERY linear pair? 180

4. Vertical Angles Angles 1 and 3 are called vertical angles (opposite of each other). They are always across. Angles 2 and 4 are vertical angles. Vertical angles are formed when 2 lines intersect. RULE: Vertical angles are congruent!! 1 2 3 4

5. Types of Angles  Complementary: Two angles whose sum is 90  Supplementary: Two angles whose sum is 180 Linear Pair Postulate : The angles in a linear pair are supplementary

6. Solve for x using the Linear Pair Post. OAC B

7. TWAP YES OR NO?

8. Homework  Pg. 38 # 7 – 25 ALL