I want to draw many shapes, but don't know how to use the class array - list

Question

paint shape 1, but paint shape 2 , shape 1 is clear ..
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
Ismousedown = true;
LocationXY = e.Location;
mousedownR = (int)(Math.Round(Math.Sqrt(Math.Pow(LocationXY.X - 250, 2) + Math.Pow(LocationXY.Y - 250, 2)), 2));
// label2.Text = mousedownstarAngle.ToString();
if (e.X >= 250)
{
gocanphal = (int)(270 - Math.Round(180 * -Math.Asin((e.Y - 250) / Math.Sqrt(Math.Pow(250 - e.X, 2) + Math.Pow(e.Y - 250, 2))) / Math.PI, 2));
}
if (e.X < 250)
{
gocanphal = (int)(90 + Math.Round(180 * (-Math.Asin((e.Y - 250) / Math.Sqrt(Math.Pow(250 - e.X, 2) + Math.Pow(e.Y - 250, 2)))) / Math.PI, 2));
}
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
if (Ismousedown == true)
{
LocationX1Y1 = e.Location;
if (e.X >= 250)
{
gocmo = (int)(270 - Math.Round(180 * -Math.Asin((LocationX1Y1.Y - 250) / Math.Sqrt(Math.Pow(250 - LocationX1Y1.X, 2) + Math.Pow(LocationX1Y1.Y - 250, 2))) / Math.PI, 2));
}
if (e.X < 250)
{
gocmo = (int)(90 + Math.Round(180 * -Math.Asin((LocationX1Y1.Y - 250) / Math.Sqrt(Math.Pow(250 - LocationX1Y1.X, 2) + Math.Pow(LocationX1Y1.Y - 250, 2))) / Math.PI, 2));
}
Refresh();
mouseupR = (int)(Math.Round(Math.Sqrt(Math.Pow(LocationX1Y1.X - 250, 2) + Math.Pow(LocationX1Y1.Y - 250, 2)), 2));
}
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
if (Ismousedown == true)
{
LocationX1Y1 = e.Location;
Ismousedown = false;
mouseupR = (int)(Math.Round(Math.Sqrt(Math.Pow(e.X - 250, 2) + Math.Pow(e.Y - 250, 2)), 2));
}
}
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
e.Graphics.DrawLine(penn, 250, 250, 250, 0);
var g = e.Graphics;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
var center = new Point(250, 250);
var innerR = mouseupR;// xa or gan diem dau
//var thickness = 30;// do day
var startAngle1 = gocanphal + 90;// diem bat dau
var arcLength1 = gocmo - gocanphal;// diem end
var outerR = mousedownR;
// var innerR = mousedownR - mouseupR;
var outerRect = new Rectangle
(center.X - outerR, center.Y - outerR, 2 * outerR, 2 * outerR);//center.Y - outerR
var innerRect = new Rectangle
(center.X - innerR, center.Y - innerR, 2 * innerR, 2 * innerR); // center.X - innerR
// using (var p = new GraphicsPath())
e.Graphics.FillEllipse(Brushes.White, 150, 150, 5, 5);
GraphicsPath p = new GraphicsPath();
p.AddArc(outerRect, startAngle1, arcLength1);
p.AddArc(innerRect, startAngle1 + arcLength1, -arcLength1);
p.CloseFigure();
g.DrawPath(Pens.Blue, p);
}
}
}
Want to draw more pictures and save