Rysowanie elips

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace RysowanieElips2
{
public partial class Form1 : Form
{
Graphics g1;
public Form1()
{
InitializeComponent();
g1 = this.CreateGraphics();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void Button1_Click(object sender, EventArgs e)
{
}
private void Button1_Click_1(object sender, EventArgs e)
{
Pen p1 = new Pen(Color.Black, 1);
g1.TranslateTransform(200, 200);
g1.DrawLine(p1, -100, 0, 100, 0);
g1.DrawLine(p1, 100, 0, 90, -10);
g1.DrawLine(p1, 100, 0, 90, 10);
g1.DrawLine(p1, 0, -100, 0, 100);
g1.DrawLine(p1, 0, 100, -10, 90);
g1.DrawLine(p1, 0, 100, 10, 90);
}
private void Button2_Click(object sender, EventArgs e)
{
Pen p1 = new Pen(Color.Blue, 3);
Pen p2 = new Pen(Color.Red, 3);
g1.DrawEllipse(p1, -100, -50, 200, 100);
g1.DrawEllipse(p2, -50, -100, 100, 200);
}
private void Button3_Click(object sender, EventArgs e)
{
SolidBrush b1 = new SolidBrush(Color.Aqua);
g1.FillEllipse(b1, 0, 0, 100, 60);
}
}
}