ABCD is a square. How many squares have two or more vertices in the set {A,B,C,D} ?

I got 9 and then 12, and it says that they were both incorrect!

Guest Nov 12, 2018

#1

#2**0 **

I come up with 11 if you count ABCD (don't forget the diagonals)....and wondering...if you use three of the vertices, then isn't it the same square ABCD.....if yes, AND you can't use ABCD, then I get only 6.

ElectricPavlov
Nov 12, 2018

edited by
Guest
Nov 12, 2018