No the answer is 9 because 54 divided by 9 is 9
When you reflect a diagonal over a line of symmetry, the diagonal will land perfectly on the other diagonal (and vice versa). This suggests that one diagonal is a mirror copy of the other.
Another way to put it: The vertex points of the rectangle will swap when we reflect over a line of symmetry. A diagonal is simply the opposite vertex points joined together. So this is why the diagonals swap places (because the vertices line up perfectly when you apply the reflection).
The answer is D. You just need to multiply .42x71.hope this helped you out!!!
Answer: The second one, B
Step-by-step explanation:
