Quote Originally Posted by cwilliamrose View Post
I had to try the midpoint constraints because I was sure they would work;


Works for me, if you change the size of the rectangle to hole stays centered.
Bill, I told you I should have been a lawyer:
To do it like this, you have to choose the line midpoint, then Ctrl choose the circle center, and then choose the appropriate constraint - twice. And this only works if the rectangle is horizontal/vertical. If the rectangle is sloping, it doesn't work.
I still like the midpoint of the diagonal construction line - always works.