public class Polygon {

	private int n = 3;
	private double side = 1;
	private double x = 0;
	private double y = 0;

	Polygon() {

	}

	Polygon(int numSides, double length) {
		n = numSides;
		side = length;
		x = 0;
		y = 0;
	}

	Polygon(int numSides, double length, double X, double Y) {
		n = numSides;
		side = length;
		x = X;
		y = Y;
	}

	int getNumSides() {
		return n;
	}

	double getLength() {
		return side;
	}

	double getX() {
		return x;
	}

	double getY() {
		return y;
	}

	void setNumSides(int s) {
		n = s;
	}

	void setLength(double s) {
		side = s;
	}

	void setX(double s) {
		x = s;
	}

	void setY(double s) {
		y = s;
	}

	double getPerimeter(){
		return n*side;
	}

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

}