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D ,\ E ,\ F are the mid-point of the s...

`D ,\ E ,\ F` are the mid-point of the sides `B C ,\ C A\ a n d\ A B` respectively of `/_\ A B C`. Then ` D E F` is congruent to triangle.
`(a)A B C`
(b) AEF
(c) `B F D ,\ C D E`
(d) `A F E ,\ B F D ,\ C D E`

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