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Mathematics 7 Online
OpenStudy (anonymous):

In trapezoid ABCD, find m∠A if m∠B= 25°, m∠C = 155° and m∠ D= 117°

OpenStudy (ivettef365):

what is the sum of the interior angles of a trapezoid ?

OpenStudy (ivettef365):

trapezoid have 4 sides

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