1. + CHAPTER 2 Section 3: Angle Bisectors

2. + Objective: Find measures of complementary and supplementary angles. Where would we use this in real life?

3. + Vocabulary… Two angles are ___________________ if the sum of their measures is 90°. Each angle is ___________________the of the other. complementary the complement

4. + B A Angle A and angle B are complementary angles.

5. + Two angles are____________________ if the sum of their measures is 180°. Each angle is the _________________of the other. supplementary supplement Vocabulary…

6. + D C Angle C and angle D are supplementary angles.

7. + Example 1: Identify complements and supplements Determine whether angles are complementary, supplementary, or neither. supplementary

8. + Example 1: Identify complements and supplements Determine whether angles are complementary, supplementary, or neither. neither

9. + Example 1: Identify complements and supplements Determine whether angles are complementary, supplementary, or neither. complementary

10. + Two angles are ____________ if they share a common vertex and side, but have no common interior points. Vocabulary… adjacent

11. + Example 2: Identify Adjacent Angles Tell whether the numbered angles are adjacent or nonadjacent. Nonadjacent (not touching) (no shared side)

12. + Example 2: Identify Adjacent Angles Tell whether the numbered angles are adjacent or nonadjacent. Adjacent touching, shared side, shared vertex

13. + Example 2: Identify Adjacent Angles Tell whether the numbered angles are adjacent or nonadjacent. Nonadjacent (not touching) (no shared side)

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16. + Neither

17. + Right

18. + Supplementary

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