This project is the base of a project described in a Distance Formula tutorial published on my blog (not allowed to link to) that derives the distance formula of analytic geometry and then describes how to code the formula. The tutorial ends by using the formula as used in a second project you can view at http://scratch.mit.edu/projects/16266075/ that computes the distance between an ant and the mouse-pointer as the mouse is moved around the screen. The ant is programmed to move toward the mouse-pointer.
