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Mathematics 19 Online
OpenStudy (anonymous):

n the diagram below, lines a and b are parallel and cut by a transversal, t. If angle 1 is 100 degrees, find the measure of angle 4. Answers : 50 80 90 100

OpenStudy (anonymous):

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Directrix (directrix):

Angles 1 and 4 are a linear pair. Together, they form a straight angle which has measure 180. So, if the measure of angle 1 is 100, what does the measure of angle 4 have to be? |dw:1417679474844:dw|

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