Understanding Points Using Drawing2D in Microsoft C#
You are wondering what Drawing2D is in C#, basically it is namespace under System.Drawing.Drawing2D that provides advanced two-dimensional and vector graphics functionality.
So why Points? Points represent an integer x- and y-coordinates that defines a point in a two-dimensional plane. It assists in creating polygons like Triangles, quadrilaterals, pentagons, and hexagons.
Let’s say we want to create a triangle using, first we declare our points like;
Point p0 = Point.Empty;
Point p1 = Point.Empty;
Point p2 = Point.Empty;
First thing you need to have is a rectangle to draw the points in, create a rectangle like;
//set the location of your triangle withing your ClientRectangle otherwise leave at 0 so it can draw at far left of you form
int x,y = 0//width and height = 100
Rectangle rectangle = new Rectangle(x, y, 100, 100);
Then we initialize points with
p0 = new Point(rectangle.Left + (rectangle.Width/2), rectangle.Top);
p1 = new Point(rectangle.Left, rectangle.Bottom);
p2 = new Point(rectangle.Right, rectangle.Bottom);
Create Graphics to paint the points
Graphics graphics = this.CreateGraphics();
//use paint events if your want.
//make sure you include Smoothening Mode in your graphics for better looks like graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;SolidBrush solidbrush = new SolidBrush(Color.Black);
Pen pen = new Pen(solidbrush);
Paint the points like:
graphics.DrawPolygon(pen, new Point[] { p0, p1, p2 });
If you would wish to fill the you polygon use;
graphics.FillPolygon(solidbrush, new Point[] { p0, p1, p2 });
Result will be like

Here is the simplicity.

What if you just want to draw a V shape? This is how you hack it.
Change the location of your points to;
p0 = new Point(rectangle.Left + (rectangle.Width / 2), rectangle.Bottom);
p1 = new Point(rectangle.Left, rectangle.Top);
p2 = new Point(rectangle.Right, rectangle.Top);
So that p0 is on the bottom side then draw your polygon like;
graphics.DrawPolygon(pen, new Point[] { p0, p2 , p0, p1});
Result:

NB: Make sure you dispose your GDI Objects since they are unmanaged
graphics.Dispose();
pen.Dispose();
solidbrush.Dispose();
Source : https://github.com/k33ptoo/KeepToo_Points
Thank you for your time.
Check out my Youtube Channel : https://www.youtube.com/KeepToo