2道数学题饿= =、1.如图,已知两等边三角形ABC、DCE,连接AD、BE交于M.求证:BM=AM+CM.2.如图,在直角坐标系中,A的坐标为(a,0),D的坐标为(0,b),且a,b满足{根号(a+2)}+(b-4)^2=0.,求A.D两点坐标.,以A为顶
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