For a triangle XYZ, we use [XYZ] to denote its area.

Let ABCD be a square with side length 1. Points E and F lie on line BC and line CD, respectively, in such a way that angle EAF=45 degrees If [CEF]=1/9, what is the value of [AEF].

This question has already been asked, however the answer, sadly, was incorrect.

Thank you in advance for helping me this problem :)

genericnamealias Sep 27, 2021