All concentric circles are _________ to each other
Hello,
We know that,
All Concentric circles are similar to each other.
Therefore, the answer to the above fill in the blank is similar because shape of all circle are same only size i.e radius is different.
I hope this helps and makes the answer clear to you.
All the best!
All consentric circle has same radius thus it is similar to each other according to it's radius.