Answer:
A and B, no. C and D, no.
Explanation:
I apologize as I am not sure on E and F as I cannot recall if size matters.
Hope this helped even though I could only answer 2/3 questions.
If needed:
Reason for A and B: They are different sizes and contain angles with different degrees.
Reason for C and D: They are near the same size, but look partially different, and contain angles with different degrees.
Sorry again I could not help with E and F. :(