已知:如图,在梯形ABCD中,AD // BC,AB⊥BC,点M在边BC上,且∠MDB =∠ADB,.
(1)求证:BM=CM;
(2)作BE⊥DM,垂足为点E,并交CD于点F.
求证:.
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已知:如图,在梯形ABCD中,AD // BC,AB⊥BC,点M在边BC上,且∠MDB =∠ADB,.
(1)求证:BM=CM;
(2)作BE⊥DM,垂足为点E,并交CD于点F.
求证:.
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