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ABCD is a quadrilateral in which AB=A...

ABCD is a quadrilateral in which AB=AD . The bisector of  BAC AND CAD intersect the sides BC and CD at the points E and F respectively. Prove that EF||BD.

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By angle bisector theorem in `ΔABC,`
`(BE)/(EC)=(AB)/(AC)`
By angle bisector theorem, in triangle in triangle `ADC`
`(AD)/(AC)=(DF)/(FC)`....(i)
...
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