∴∠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.