The following applet was designed to help students to conceptually discover how to calculate the distance between any two points in the coordinate plane.
[color=#c51414][b]No x-sub-2's or y-sub-1's...or...etc.... are needed![/color]
[b]Students who work with this applet will discover that calculating the distance between any 2 points in
the coordinate plane is a simple application of the Pythagorean Theorem! [/b]