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ABCD is a trapezium with AB||DC. E and F...

ABCD is a trapezium with `AB||DC`. E and F are points on non-parallel sides AD and BC respectively such that EF is parallel to AB (see the figure). Show that `(AE)/(ED)=(BF)/(FC)`

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The correct Answer is:
`(AE)/(ED) = (BF)/(FC)`
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