如图1,在正方形ABCD中,对角线AC与BD相交于点E,AF平分∠BAC,交BD于点F. (1)求证:EF+ AC=AB; (2)如图1,在正方形ABCD中,对角线AC与BD相交于点E,AF平分∠BAC,交BD于点F.(1)求证:EF+ AC=AB;(2)
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