Which information is not sufficient to prove that a
parallelogram is a square?
1) The diagonals are both congruent and 3)
perpendicular.
2) The diagonals are congruent and one pair 4) of adjacent sides
are congruent.
The diagonals are perpendicular and one pair of adjacent sides are
congruent. The diagonals are perpendicular and one pair of adjacent
sides are perpendicular.
Which information is not sufficient to prove that a parallelogram is a square? 1) The diagonals are both congruent and
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