Which description does NOT guarantee that a quadrilateral is a square?
A. has all sides congruent and all angles congruent
B. is a parallelogram with perpendicular diagonals
C. has all right angles and has all sides congruent
D. is both a rectangle and a rhombus

Question

Which description does NOT guarantee that a quadrilateral is a square?
  A. has all sides congruent and all angles congruent 	
  B. is a parallelogram with perpendicular diagonals 	
  C. has all right angles and has all sides congruent 	
  D. is both a rectangle and a rhombus

anonymous · Answer

Do you have any guesses?

anonymous · Answer

I think it might be B - this is because a parallelogram doesn't have to have equal sides for the diagonals to be perpendicular. All the other options must be squares.