Almost A Circle

We were driving, headed downtown for this meeting I have been dreading. The kid is all excited, beside herself really. To distract her - or maybe myself - I keep pointing out architecture. I see a house up on the left with an octogon window. 

"Look sweetie! That house has a window that is almost round." Check me out, prepping her for future math work. I am awesome!

"Yeah! It is almost round, Gramma! Except it's an octogon."

Well ... dammity. I warned her that if her head explodes because she is so smart, it is not my fault.