1. The problem statement, all variables and given/known data Imagine you're given a rectangle, with lengths LX and LY. Now we place a point somewhere inside this rectangle, we don't know where it is. What we DO know, is the angle between lines from the corners to that point. (such that if it was at the center, and the point a square, every angle would be 90, or pi/2) Is there a way to calculate, from given angles, the x and y position of this point. 3. The attempt at a solution I tried by hand and mathematica. I can't seem to do it, neither can mathematica. Has anyone seen or tried this before? Ill draw it up just in case you don't understand the question. Find the coordinates -> ABCD are the full angles from semi-diagonal to semi-diagonal. The straight lines are just for seeing xo and yo.