Question

If u don't know then please don't answer​

Answer 1

Step-by-step explanation:

In Δ BEC & Δ CFB

i.  ∠BEC = ∠CFB = 90°        [ Both are altitude, given ]

ii. BC = BC                     [ Common side ]

iii.   BE = CF                   [ Given ]

∴   Δ BEC ≅ Δ CFB          [RHS congruency ]

So, yes they are isosceles triangles.

HOPE THIS IS HELPFUL !!! : )

Answer 2

Answer:

Triangle BEC and Triangle CFB are isosceles because:-

BC = BC ( as same base)

BE=CF ( as given)

As only both sides are equal it is isosceles...