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In DeltaABC," m "angleBAC=90^(@)," seg "...

In `DeltaABC," m "angleBAC=90^(@)," seg " DEbot" side "AB, " seg "DFbot" side "AC," seg "ADbot" side "BC.`
Prove : `A(squareAEDF)=sqrt(AExxEBxxAFxxFC))`

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The correct Answer is:
`thereforeA(squareAEDF)=sqrt(AExxEBxxAFxxFC))`
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