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Solution
Let angle EAD be x.
So according to given conditions we get , ACB = x.
As an external angle CBD = 2x.
Also we know that total angle on an line is 180 we get EFD = 3x because of which EDF = 3x.
Similarly on opposite side we get AED = 3x.
So in total x+3x+3x = 180.
We get x = 25 (approx).
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