Question

如圖，已知點E，C在線段BF上，BE=CF，AB∥DE，∠ACB=∠F．求證：△ABC≌△DEF．

 

Answer 1

證明：∵AB∥DE，                  

∴∠B=∠DEF．                     

∵BE=CF，

∴BC=EF．                             

∵∠ACB=∠F，                               

∴△ABC≌△DEF．

解析:略