+ CHAPTER 2 Section 4: Complementary and Supplementary Angles.

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Presentation transcript:

+ CHAPTER 2 Section 4: Complementary and Supplementary Angles

+ Objective: Find the measures of angles formed by intersecting lines. Where would we use this in real life?

+ Vocabulary… Two angles are ___________________if they are not adjacent and their sides are formed by two intersecting lines. vertical angles

+ Vocabulary… Two adjacent angles are a _____________ _________if their non-common sides are on the same line. A linear pair is TWO angles that form a straight line!!!!!!!! linear pair

+ A linear pair forms a straight line, which together, they equal 180 degrees.

+ Linear pair neither adjacent

+

+ Because it is vertical to <1 Because it is vertical to <1

+ The given angles are vertical angles, so they are congruent. 42 2y