Polygon Calculator

polygon Area of Polygon [Using length of a side]:
[ ((side)²×N)/(4Tan(π/N)) ]
Enter the length =
Enter the Number of Sides =
Area of Polygon =

polygon Area of Polygon [Using radius (circumradius)]:
[ ½×R²×Sin(2π/N) ]
Enter the Radius =
Enter the Number of Sides =
Area of Polygon =

polygon Area of Polygon [Using apothem (inradius)]:
[ A²×N×Tan(π/N) ][ Apothem(A) = R×Cos(π/N) ]
Enter the Radius =
Enter the Number of Sides =
Area of Polygon =

polygon Area of Polygon [Using apothem and length of a side]:
[ (A×P)/2 ][ Apothem(A) = side/(2×Tan(π/N)) ]
Enter the Length =
Enter the Number of Sides =
Area of Polygon =

polygon Perimeter of Polygon:
[ N×(side) ]
Enter the Length =
Enter the Number of Sides =
Perimeter of Polygon =