Adobe Extending Flash Professional CS5 - Manual (Page 362)

340 EXTENDING FLASH PROFESSIONAL
Math object
Last updated 5/2/2011
Example
The following example stores the value for the distance between pt1 and pt2 in the
dist variable:
var pt1 = {x:10, y:20}
var pt2 = {x:100, y:200}
var dist = fl.Math.pointDistance(pt1, pt2);