Answer:
No.
Here's the break why it is not proportional...
The proportion breaks near the end because the multipliers no longer match.
Answer:
Step-by-step explanation:
If two shapes are similar, they are scaled by some factor. In other words, you have
In particular, we know that
And we deduce
So, the perimeter of ABC is
So, the perimeter of ABC is three times the perimeter of DEF, and thus it's
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