Enneagon is a polygon with 9 sides and 9 internal angles. Enneagon is also known as Nonagon. A regular nonagon has an internal angle of 140 degrees each. Sum of interior angles of the nonagon is 1260 degree.
The center of the circumcircle is also taken as the center of the regular Nonagon.
The line segment drawn the perpendicular to a side of the Nonagon is called the Apothem and is represented by ‘a’.
Area ≈ 6.1818 * s * s where s is side length.
Input : 6 Output :Area of Regular Nonagon = 222.5448 Input : 8 Output :Area of Regular Nonagon = 395.6352
Area of Regular Nonagon = 222.5448
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