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geometru polygon sides

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by kvcpk » Thu Jun 17, 2010 2:30 am
francoisph wrote:If the sum of the interior angles of a regular polygon measures up to 1440 degrees, how many sides does the polygon have?

could you explain clearly please?
Again a formula..

Sum of interior angles of a regula polygon is 180(n-2)

180(n-2) = 1440
so n=10
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