问大家一系列初三几何题,..共3小题..如图1,已知点D在AC上,△ABC和△ADE都是等腰直角三角形,点M为EC的中点.(1)求证:△BMD为等腰直角三角形.(2)将△ADE绕点A逆时针旋转45°,如图2中的“△

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