如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.(要如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.)

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如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.(要如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.)
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如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.(要如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.)
如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.(要
如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.
求证:四边形BCDE是矩形.)

如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.(要如图,AB=AC,AD=AE,DE=BC,且∠BAD=∠CAE.求证:四边形BCDE是矩形.)