document.write( "Question 549542: Which of the following conditions or set of conditions is sufficient for a parallelogram to be a square? \n" ); document.write( "
Algebra.Com's Answer #358227 by richard1234(7193)\"\" \"About 
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The only conditions required are that the parallelogram has four congruent sides (or equivalently, equal diagonals) and four right angles. \n" ); document.write( "
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