using System;

public class Program

{

    public static void Main()

    {

    Random rnd = new Random();

            int w = Polygon.GetClientWidth();

            int h = Polygon.GetClientHeight();

            //Y axis************************************

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

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

            Polygon yAxis = new Polygon(yBottom, yTop);

            yAxis.Show();

            //X axis************************************

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

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

            Polygon xAxis = new Polygon(xLeft, xRight);

            xAxis.Show();

​

            double m = rnd.Next(1, 11);

            m = m / 4.0;

            int b = 0;

            Point L = new Point(-w / 2, -h / 2);

            Point R = new Point(w / 2, h / 2);

            Polygon t = new Polygon(L, R);

​

            Point X = new Point(50, m*50+b);

            Polygon pX = new Polygon(20, 20);

            Console.WriteLine("X=({0},{1})", X.GetX(), X.GetY());

            pX.SetCaption("X=" + X);

            pX.Move(X.GetX(), X.GetY());

            pX.SetBrushColor(System.Drawing.Color.Blue);

            pX.Show();

​

            Console.WriteLine("Dear Pupil, what is the m of the line, if he goes into X and (0,0)?");

            double answer = double.Parse(Console.ReadLine());

            Point O = new Point(0,0);

            Polygon p1 = new Polygon(10, 3);

            Console.WriteLine("O=({0},{1})", O.GetX(), O.GetY());

            p1.SetCaption("O=" + O);

            p1.Move(O.GetX(), O.GetY());

            p1.Show();

            for (double i = O.GetX(); i < X.GetX(); i++)

            {

                p1.Move(1,m);

                Thread.Sleep(15);

            }

            if(answer==m)

                pO.SetBrushColor(System.Drawing.Color.Green);

            else

                pO.SetBrushColor(System.Drawing.Color.Red);

​

​

            Polygon lineCaption = new Polygon(10, 0);

            lineCaption.Move(-w / 2 + 100, h / 2 - 100);

            lineCaption.SetCaption("Y = " + m + "X + " + b);

            lineCaption.Show();

    }

}