Which of the following is a property of a square but not necessarily a rhombus? A) Diagonals are congruent

B) Diagonals are perpendicular

C) Each diagonal bisects a pair of opposite angles

D) 4 congruent sides

F) None of the answers are correct

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.