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Mathematics 11 Online
OpenStudy (anonymous):

my good friends!

OpenStudy (anonymous):

OpenStudy (anonymous):

<7+<6 must add to 180 since they are on a straight line. 135+x=180 x=45 (angle 6=45) Then you can use Alternate interior angles to say 6 is congruent to 4 so 4 is 45

OpenStudy (anonymous):

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