Answer:
ΔABC ≅ ΔFED
Explanation:
Look at the alignment and position of the letters.
A = F
B = E
C = D
Properly align the letters in order to their corresponding position.
ΔA ≅ ΔF
ΔAB ≅ ΔFE
ΔABC ≅ ΔFED
Answer:

Step-by-step explanation:
Lets solve the first half.

Second one:

Now compare.....Not the same right??
So your answer is: 
Hope this helps :)
The scale factor would be 3.5