 Vertical angles – are not adjacent, and their sides are formed by two intersecting lines  1 and 3 are vertical angles  2 and 4 are vertical angles.

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Presentation transcript:

 Vertical angles – are not adjacent, and their sides are formed by two intersecting lines  1 and 3 are vertical angles  2 and 4 are vertical angles

 Linear pair – two adjacent angles whose noncommon sides are on the same line  5 and 6 are a linear pair 56 Noncommon side common side

 If two angles form a linear pair, then they are supplementary  m 1 + m 2 = 180˚ 12

 Find the measure of RSU › 118˚ R 62˚ S T U

 Vertical Angles are congruent  1 3 and 

 Find the measure of CED 50˚ D A B C E

 Find m 1, m 2, and m ˚

 Find the value of y  (4y-42) = 2y  -42 = -2y  21 = y 2y˚ (4y-42)˚

 Pg. 78 #1-8