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the sum of the measure of the interior angles of a convex polygon is 1260 does the pentagram have 7 8 or 9 sides
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the sum of the measure of the interior angles of a convex polygon is 1260 does the pentagram have 7 8 or 9 sides

User Laaksom
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the sum of interior angles =(n-2)*180, n is the number of sides
(n-2)*180=1260
n-2=7
n=9
User Single Entity
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