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百度试题 结果1 题目CMBRt△ABC≌Rt△EDF,∠ACB=∠F=90°∠A=∠E=30°,△EDF绕着边AB的中点D旋转,DE,DF分别交线段AC于点M,K,如果MK2+CK=AM2,则∠CDF的大小是(度) 相关知识点: 试题来源: 解析 15°