来自黄顺亮的问题
如图,已知点E,C在线段BF上,BE=CF,AB∥DE,∠ACB=∠F.求证:△ABC≌△DEF.
如图,已知点E,C在线段BF上,BE=CF,AB∥DE,∠ACB=∠F.求证:△ABC≌△DEF.
1回答
2020-05-12 09:47
如图,已知点E,C在线段BF上,BE=CF,AB∥DE,∠ACB=∠F.求证:△ABC≌△DEF.
如图,已知点E,C在线段BF上,BE=CF,AB∥DE,∠ACB=∠F.求证:△ABC≌△DEF.
证明:∵AB∥DE,
∴∠B=∠DEF.
∵BE=CF,
∴BC=EF.
∵∠ACB=∠F,
∴
∠B=∠DEFBC=EF∠ACB=∠F