document.write( "Question 1193154: The drawing shows trapezoid ABCD with
\n" ); document.write( "AB ∥ DC;
\n" ); document.write( " also, M and N are midpoints of
\n" ); document.write( "AD and BC.\r
\n" ); document.write( "\n" ); document.write( "Given:MN = 6.5 and DC = 7.7
\n" ); document.write( "Find:AB
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Algebra.Com's Answer #825154 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "since \"M+\"and \"N\" are \"midpoints\" of \"AD+\"and \"BC\", than \"MN\" is \"midline+\" \r
\n" ); document.write( "\n" ); document.write( "recall: In a trapezoid, a midline (or a midsegment) is the line joining the midpoints of the sides. In a trapezoid, the midline is parallel to the bases and its length is \"half\"\"+their+\"\"sum\". \r
\n" ); document.write( "\n" ); document.write( "\"MN+=%28AB%2BDC%29%2F2\"......substitute given
\n" ); document.write( "\"6.5+=%28AB%2B7.7%29%2F2\"
\n" ); document.write( "\"6.5%2A2+=AB%2B7.7\"
\n" ); document.write( "\"13-7.7=AB\"
\n" ); document.write( "\"AB=5.3\"
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