Bitmap bmp = new Bitmap(400, 400);
            Graphics g = Graphics.FromImage(bmp);
            Pen olovka = new Pen(Color.Cyan, 5);
            g.DrawEllipse(olovka, 160, 20, 80, 80);
            g.DrawRectangle(olovka, 140, 100, 120, 120);
            Point a = new Point(260, 100);
            Point b = new Point(300, 0);
            g.DrawLine(olovka, a, b);
            Point c = new Point(160, 220);
            Point d = new Point(160, 300);
            g.DrawLine(olovka, c, d);

            Point[] tacke = { new Point(240, 220), new Point(240, 300),new Point(140,100),new Point(80,160)};
            g.DrawLine(olovka, tacke[0], tacke[1]);
            g.DrawLine(olovka, tacke[2], tacke[3]);
            pictureBox1.Image = bmp;