如图,在△ABC中,AB=CB,∠ABC=90°,D为AB延长线上一点,BE=BD,连AE,DE,DC.(1)求证:△ABE≌△CBD (2)若∠CAE=30°,求∠BDC的度数.

如图,在△ABC中,AB=CB,∠ABC=90°,D为AB延长线上一点,BE=BD,连AE,DE,DC.(1)求证:△ABE≌△CBD (2)若∠CAE=30°,求∠BDC的度数.

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