Well, no, you won't.
There are a few reasons for that:
1) It's a console app. That means that it doesn't have a Graphical User Interface, it has a text based interface. Console Apps don't show lines, or circles, or buttons, or anything other than text. Try a WinForms application instead.
2) It's a point. I.e. it is a position in a space. A map reference if you like. It doesn't have anything to display. If I send a letter to you house (addressing a point on the planet surface) that does not automatically paint your house red!
A point does not have a size, so it can't be seen - you need to (for example) draw a line between two points!
Create a Winforms apps, and in your form design window, look at the Properties pane. Select the "Events" button - it looks like a lightning bolt - and scroll through to the Paint event. double click it and add this code to the handler routine when it appears as code:
Pen red = new Pen(Color.Red, 3);
Point p1 = new Point(100, 100);
Point p2 = new Point(200, 200);
e.Graphics.DrawLine(red, p1, p2);
red.Dispose();
Now when you run your application, it will draw a red line, three pixels wide, diagonally on your form.