using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
GraphicsPath gp = new GraphicsPath();
gp.AddLine(10, 10, 110, 15);
gp.AddLine(110, 15, 100, 96);
gp.AddLine(100, 96, 15, 110);
gp.CloseFigure();
g.FillRectangle(Brushes.White, this.ClientRectangle);
g.DrawPath(Pens.Black, gp);
gp.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}