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OpenStudy (anonymous):
In a quadrilateral where b is 2x ,C is x+3,A is x-7, and the exterior angle is 76. What is the measure of one of the interior angles?
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OpenStudy (campbell_st):
the exterior and interior angles in a polygon(quadrilateral are supplementary ( add to 180) so choose an angle say B = 2x then 2x + 76 = 180 just solve for x hope this helps
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