document.write( "Question 284155: How do I find the values of a & b that would make the quadrilateral a parallelogram:
\n" ); document.write( "2a+6,6b-a,3a-10,5a+1
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Algebra.Com's Answer #206185 by richwmiller(17219)\"\" \"About 
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we would need sets of sides that are equal.
\n" ); document.write( "2a+6=3a-10
\n" ); document.write( "6b-a=5a+1
\n" ); document.write( "a = 16, b = 97/6
\n" ); document.write( "they don't work out so well
\n" ); document.write( "but neither do
\n" ); document.write( "2a+6= 6b-a,
\n" ); document.write( "5a+1=3a-10
\n" ); document.write( "a = -11/2, b = -7/4\r
\n" ); document.write( "\n" ); document.write( " 2a+6=5a+1,
\n" ); document.write( " 6b-a=3a-10
\n" ); document.write( "this is all that good either but
\n" ); document.write( "a = 5/3, b = -5/9
\n" ); document.write( "We can't have negative values so it must be the first grouping
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