Exercise09_09

public class Exercise09_09 {

	public static void main(String[] args) {
		class RegularPolygon {
			private int n;
			private double side;
			private double x;
			private double y;


			public RegularPolygon() {
				n = 3;
				side = 1;
				x = 0;
				y = 0;

			}

			/* Centered at (0,0) */
			public RegularPolygon(int numOfSides, double sideLength) {
				n = numOfSides;
				side = sideLength;
				x = 0;
				y = 0;
			}

			/*Polygon not centered at (0,0) */
			public RegularPolygon(int numOfSides, double sideLength, double xCoord, double yCoord) {
				n = numOfSides;
				side = sideLength;
				x = xCoord;
				y = yCoord;
			}




			public double getPerimeter() {
				return side * n;
			}
			public double getArea() {
				return (int) (n * Math.pow(side, 2) / ( 4 * Math.tan(Math.PI/n)));
			}


		}


		RegularPolygon regularPolygon1 = new RegularPolygon();
		RegularPolygon regularPolygon2 = new RegularPolygon(6, 4);
		RegularPolygon regularPolygon3 = new RegularPolygon(10, 4, 5.6, 7);

		System.out.println("Polygon 1 perimeter: " + regularPolygon1.getPerimeter());
		System.out.println("Polygon 1 area: " + regularPolygon1.getArea());
		System.out.println("Polygon 2 perimeter: " + regularPolygon2.getPerimeter());
		System.out.println("Polygon 2 area: " + regularPolygon2.getArea());
		System.out.println("Polygon 3 perimeter: " + regularPolygon3.getPerimeter());
		System.out.println("Polygon 3 area: " + regularPolygon3.getArea());

	}

}