using System;

public class Program

{

    public static void Main()

    {

        Random rnd = new Random();

            int w = Polygon.GetClientWidth();

            int h = Polygon.GetClientHeight();

            Point yBottom = new Point(0, -h / 2);

            Point yTop = new Point(0, h / 2);

            Polygon yAxis = new Polygon(yBottom, yTop);

            yAxis.Show();

            Point xLeft = new Point(-w / 2, 0);

            Point xRight = new Point(w / 2, 0);

            Polygon xAxis = new Polygon(xLeft, xRight);

            xAxis.Show();

            int x = rnd.Next(w / 2);

            Point A = new Point(x, rnd.Next(h / 2));

            Point B = new Point(x, rnd.Next(h / 2));

            Point C = new Point(rnd.Next(w / 2), rnd.Next(h / 2));

            Polygon t = new Polygon(A, B, C);

            Console.WriteLine(t);

            t.Show();

            Polygon pA = new Polygon(20, 3);

            pA.Move(A.GetX(), A.GetY());

            pA.Show();

            Polygon pB = new Polygon(20, 3);

            pB.Move(B.GetX(), B.GetY());

            pB.Show();

            Polygon pC = new Polygon(20, 3);

            pC.Move(C.GetX(), C.GetY());

            pC.Show();

​

            Console.WriteLine("A=" + A);

            Console.WriteLine("B=" + B);

            Console.WriteLine("C=" + C);

            double ab = Math.Abs((A.GetY()-(B.GetY())));

            double ac = Math.Abs((C.GetX() - (A.GetX())));

​

            Console.WriteLine("area is {0}", ((ab*ac)/ 2));

    }

}