初二数学题(跟平行四边形判定有关)
初二数学题(跟平行四边形判定有关)
在△ABC中,E,F10两点在边AB上,AE=BF,HE‖CA‖GF,H,G两点在边BC上,那么线段EH,FG,AC之间有什么大小关系?说出你的理由.
English:ABC,E in train,on two points on edge AB F10,AE = BF,HE ‖ CA ‖ GF,H,G,two points on the edge,then lines on BC FG,EH,what size relations between the AC?Tell your reasons.
我知道是EH+FG =AC
可是怎么证啊
English:I know is EH + FG = AC
But how could the card ah
D点不是我加的,是书上本来就有的、。现在没法证ED‖BC啊,
只能证四边形EDCH为平行四边形
或者证明△ADE≌△FGB
你们真给力o(╯□╰)o