+ CHAPTER 2 Section 3: Angle Bisectors + Objective: Find measures of complementary and supplementary angles. Where would we use this in real life? + Vocabulary Two angles are ___________________ if the sum of their measures is 90. Each angle is ___________________the of the other. complementary the complement + B A Angle A and angle B are complementary angles. + Two angles are____________________ if the sum of their measures is 180. Each angle is the _________________of the other. supplementary supplement Vocabulary + D C Angle C and angle D are supplementary angles. + Example 1: Identify complements and supplements Determine whether angles are complementary, supplementary, or neither. supplementary + Example 1: Identify complements and supplements Determine whether angles are complementary, supplementary, or neither. neither + Example 1: Identify complements and supplements Determine whether angles are complementary, supplementary, or neither. complementary + Two angles are ____________ if they share a common vertex and side, but have no common interior points. Vocabulary adjacent + Example 2: Identify Adjacent Angles Tell whether the numbered angles are adjacent or nonadjacent. Nonadjacent (not touching) (no shared side) + Example 2: Identify Adjacent Angles Tell whether the numbered angles are adjacent or nonadjacent. Adjacent touching, shared side, shared vertex + Example 2: Identify Adjacent Angles Tell whether the numbered angles are adjacent or nonadjacent. Nonadjacent (not touching) (no shared side) + + + Neither + Right + Supplementary + + + +