<< because distance "A" is limited
I said a reasonnable length / Point ;)
we have yet infinite possibility with my image of the previous post with this "trivial solution"!
A = 4,472136 unity in this case
If you take A = 5 and same point...you must find another angle...for cut...

Here a file but you have no need a file! ;)
http://moiscript.weebly.com/uploads/3/9/3/8/3938813/a_solution.3dm