作业帮如图,ab=cd,ae=df,ce=fb,求证af=de
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如图,ab=cd,ae=df,ce=fb,求证af=de
如图,ab=cd,ae=df,ce=fb,求证af=de
如图,ab=cd,ae=df,ce=fb,求证af=de
∵CE=FB
∴CE+EF=FB+EF
即CF=BE
又∵AB=CD,AE=DF
∴ΔABE∥ΔDCF
∴∠B=∠C
而AB=DC,BF=CE
∴ΔABF≌ΔDCE
∴AF=DE
如图:AB=CD,AE=DF,CE=FB.求证:AE∥DF
如图,ab=cd,ae=df,ce=fb,求证af=de
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