The formula to find the sum of interior angles of a polygon is 180° × (n - 2), where n is the number of sides of the polygon.
Any irregular polygon does not have equal sides and equal interior angles
(number of sides-2)*180 = sum of interior angles of a polygon
Use the formula of: 0.5*(n2-3n) whereby n is the number of sides of the polygon
Area of regular polygon: 0.5*apothem*perimeter
There is no formula for how many sides there are in a polygon; the name of the polygon shows how many sides it has.
a formula for the area of a polygon is b. A = 1/2 x b x h
The formula to find the sum of interior angles of a polygon is 180° × (n - 2), where n is the number of sides of the polygon.
Normally you just add the sides of a polygon. If it's a rounded polygon (ex:circle, oval, etc), then there is a different formula. (ex:circle=pi*r squared)
There is not a general formula for the sum of the sides of an arbitrary polygon.
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If the polygon is a regular polygon then all interior angels are equal to 180-(360/no of sides of the polygon)
By using the polygon diagonal formula or the quadratic equation formula in which in both formulae they work out that the polygon in question has 21 sides.
(n-2)(180) use that formula to find the sum of the interior angles of a polygon in degree
Any irregular polygon does not have equal sides and equal interior angles
The answer depends on whether or not it is a regular polygon and also on what information is available about it.
360/exterior angle = number of sides of a regular polygon