Some Drawing Methods and width/height

This may seem like a silly question, but can anyone think of a reason why width and height has replaced x2 and y2 in some drawing methods (like DrawRectangle for instance)? I ask because being able to specify an exact point for the lower right vertex is far more useful than having to use width and height (at least in my experience).

I recently started learning C# (came from C++) and so I'm starting to really use the framework for the first time. This little issue really jumped out at me when I started comparing the various drawing methods you use in C++ and C# and realized I couldn't just use a specific point (using an x and y value) for the lower right vertex any more.