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In the given figure, AD is perpendicular...

In the given figure, AD is perpendicular to BC and `EF "||" BC`, if `angle EAB = angle FAC`, show that triangles ABD and ACD are congruent.
Also , find the values of x and y if `AB = 2x+3 , AC = 3y+1 ` , BD = x and DC = `y+1` .

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