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Mathematics 10 Online
OpenStudy (anonymous):

What is the sum of the measure of the angles of a quadrilateral? A. 90 B. 180 C. 270 D. 360

OpenStudy (anonymous):

360

OpenStudy (anonymous):

always 360 degree

OpenStudy (anonymous):

And just fyi to calculate the sum of the measures of the internal angles of any polygon, you take the number of sides, subtract 2 and multiply the difference by 180. For instance, a 5-sided figure is (5-2)180 = 540 degrees.

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