Find the number of sides of regular polygon is angle sum is 1260
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(1) Given sum of interior angles = 1260.
1260 = (n - 2) * 180
1260 = 180n - 360
1260 + 360 = 180n
1620/180 = n
n = 9.
Therefore the number of sides = 9.
1260 = (n - 2) * 180
1260 = 180n - 360
1260 + 360 = 180n
1620/180 = n
n = 9.
Therefore the number of sides = 9.
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