document.write( "Question 259662: Please help??
\n" ); document.write( "Can you prove this conjecture is false by finding one counterexample: Two planes always intersect in exactly one line.
\n" ); document.write( "Thank you so much in advance!!
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Algebra.Com's Answer #191106 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Yes, one counterexample destroys it.
\n" ); document.write( "Two parallel planes never meet, that is, they don't intersect in exactly one line.
\n" ); document.write( "So the conjecture is false.
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