Question 1132233
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It can't be done; there is not enough information.<br>
A parallelogram has two diagonals.  The length of one of them does not determine the parallelogram; given a segment that is the diagonal of a parallelogram, there are an infinite number of parallelograms with diagonals of that length.<br>
Even knowing the lengths of BOTH diagonals is not enough to determine a unique parallelogram.  We know the diagonals bisect each other; but given the lengths of both of them, there are still an infinite number of parallelograms that can be formed.