已知:如图,AB=AC,AD平分∠BAC,证明:△ABD≌△ACD.

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已知:如图,AB=AC,AD平分∠BAC,证明:△ABD≌△ACD.
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已知:如图,AB=AC,AD平分∠BAC,证明:△ABD≌△ACD.
已知:如图,AB=AC,AD平分∠BAC,证明:△ABD≌△ACD.

已知:如图,AB=AC,AD平分∠BAC,证明:△ABD≌△ACD.
角边角定理
AB=AC