如图所示,在菱形ABCD中,点E,F分别在边BC,CD,∠BAF=∠DAF.求证BD//EF
的有关信息介绍如下:【纠正:∠BAF=∠DAE】证明:∵四边形ABCD是菱形∴AB=AB=BC=CD,∠ABC=∠ADC∵∠BAF=∠DAE∴∠BAF-∠EAF=∠DAE-∠EAF即∠BAE=∠DAF∴△BAE≌△DAF(ASA)∴BE=DF∴BC-BE=DC-DF即CE=CF∴∠CEF=∠CFE=(180°-∠C)÷2∵BC=DC∴∠CBD=∠CDB=(180°-∠C)÷2∴∠CEF=∠CBD∴BD//EF