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OpenStudy (anonymous):
,Find the sum of the measures of the interior angles of a decagon. 360 1440 1620 1800
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OpenStudy (anonymous):
There's a formula for calculating this. Sum of interior angles = 180*(number of angles - 2). You can visualize this as dividing a polygon into triangles. A rectangle makes 2 triangles, so it has 360 degrees. A decagon then makes 8 triangles, and 180*8 degrees.
OpenStudy (anonymous):
iight thankx
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