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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] = 1/19, what is the value of [AEF]?

 Sep 3, 2021
 #1
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This was answered before.  The answer is 4/7.

 Sep 3, 2021
 #2
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Hi, I'm pretty sure you got the answer incorrect, but it's still cool that you answered. 

Guest Sep 3, 2021

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