What is a coordinate space? According to Microsoft a coordinate space is a "planar space based on the Cartesian coordinate system". This a rather grand description of something rather simple. A coordinate space is just a flat space you can draw on and a method of describing where you want your drawing to take place.

 

   
   
Method   Description
Canvases What is a Canvas?
Points What is a Point?
Rectangles What is a Rect?
Object Locations How exactly are locations defined?