如图,已知点M为矩形ABCD中边BC的中点,若要使△AMD为 等腰直角三角

如图,已知点M为矩形ABCD中边BC的中点,若要使△AMD

等腰直角三角形,则再须添加一条件;那么在下列给出的条件中,

错误的是     

AAMD=90°         BAMBAD的平分线

CAM:AD=1:        DAB:BC1:

 

 


 

答案

D

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