document.write( "Question 1156831: The parallel sides of a trapezoid are 8 inches and 12 inches long, while one of the non- parallel sides is 6 inches long. How far must this side be extended to meet the extension of the opposite side? What are the possible lengths for the opposite side? \n" ); document.write( "
Algebra.Com's Answer #779623 by mananth(16946)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "AB ||CD\r
\n" ); document.write( "\n" ); document.write( "Therefore triangle EAB ~ triangle ECD ( Two angles congruent)\r
\n" ); document.write( "\n" ); document.write( "Therefore AB/CD = EA/EC\r
\n" ); document.write( "\n" ); document.write( "8/12 =x/(x+6)\r
\n" ); document.write( "\n" ); document.write( "3/4 = x/(x+6)\r
\n" ); document.write( "\n" ); document.write( "3x+18=4x\r
\n" ); document.write( "\n" ); document.write( "x=18 \r
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