∴∠A=∠C

B.C.

∴∠E=∠EBC (two straight lines are parallel and the internal dislocation angles are equal)

Similarly ∠ Abe =∠BFC

In △ Abe and △CFB,

∠E=∠EBC

∠A=∠B

∠ Abe =∠CFB

∴△AEB is similar to△△△ CBF.