It depends on what the polygon has 900 of.
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A polygon that has 900 total degrees is the heptagon, which has 7 sides.
7
7 sides, which makes it a heptagon. A polygon is any shape with 3 or more sides.
There is no formula for how many sides there are in a polygon; the name of the polygon shows how many sides it has.
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