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OpenStudy (anonymous):
What is the sum of the measure of the angles of a quadrilateral?
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OpenStudy (anonymous):
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OpenStudy (anonymous):
not helping
OpenStudy (anonymous):
sorry, my connection was very bad last night, you see that a quadrilateral can be divided into two triangles, now sum of angles of a triangle is 180, therefore sum of the measure of the angles of a quadrilateral will be 2*180=360
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