1. Angle Pairs 1.5

2. Solutions to HW 1. 89, 45, 44 2. -14 3. 19 4. 32 5. 13 6 23, 25

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4. Solutions to HW 1. Interior8. Angle Addition 2. Exterior9. Congruent Marks 3. 39 or 40, Acute 4. 130 or 131, Obtuse 5. Straight 6. 25, 25, Congruent 7. 90, right

5. Vocabulary

6. Examples Where are supplementary angles? What is the degree of <AFB What is the degree of <CFD

7. Example What can we conclude from this diagram? Ex: <1 = <2

8. Example 2

9. Linear Pair (We will be using these for awhile) A linear pair is a pair of adjacent angles whose noncommon sides are opposite rays. The angles of a linear pair form a straight angle. What will be the total degree when you add both angles <ABD and <DBC?

10. Algebra Example – Solve for x given this linear pair

11. Angle Bisector What does bisector mean again???