Using below code I am able to draw arrow shaped button(shown below) ,but I want to draw hexagone(shown below as result image) ,so that I can use png image of size 175x154 as button image ,What Points I need to use to draw this ? and i need to to draw 6 such buttons ,how do i achieve this ?

private void Parent_Load(object sender, EventArgs e)
{
    // Define the points in the polygonal path.
    Point[] pts = {
        new Point( 20,  60),
        new Point(140,  60),
        new Point(140,  20),
        new Point(220, 100),
        new Point(140, 180),
        new Point(140, 140),
        new Point( 20, 140)
    };

    // Make the GraphicsPath.
    GraphicsPath polygon_path = new GraphicsPath(FillMode.Winding);
    polygon_path.AddPolygon(pts);

    // Convert the GraphicsPath into a Region.
    Region polygon_region = new Region(polygon_path);

    // Constrain the button to the region.
    btnExam.Region = polygon_region;

    // Make the button big enough to hold the whole region.
    btnExam.SetBounds(
        btnExam.Location.X,
        btnExam.Location.Y,
        pts[3].X + 5, pts[4].Y + 5);
}