分别延长CA,FD,作BM⊥CA,EN⊥FD,垂足分别为M,N,
则AB=DE,〈BAC=〈EDF=110度,
〈MAB=〈NDE=180度-110度=70度,
〈BMA=〈END=90度,
RT△BMA≌RT△END,
BM=EN,MA=ND,
BC=EF,
RT△BMC≌RT△ENF,
MC=NF,MC-MA=FN-ND,
AE=DF,
AB=DE,
BC=EF,
∴△ABC≌△DEF.（SSS）.