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The formula for the sum of the measures of the interior angles of a regular polygon is (n-2)180. Set this equal to 900 and solve for n to find the number of sides in the polygon.

900 = 180(n-2)

900 = 180n - 360

180n = 1260

n = 1260/180

n = 7

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13y ago
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Q: How many sides does a polygon have when the sum of the measure of its interior angles is 900?
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