document.write( "Question 1188244: In the diagram below, ABCG is a parallelogram. Line BF=40 cm and Line FE=16 cm. Find the length of Line ED\r
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Algebra.Com's Answer #819324 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "We draw CE and AD to create trapezoids (trapeziums if you live in the UK) \r\n" );
document.write( "ABCE and ABCD, so that we may use a well-known theorem, which is:\r\n" );
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document.write( "THEOREM: Trapezoid (trapezium) diagonals divide each other in the same ratio.\r\n" );
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document.write( "[The theorem is easily proved by similar triangles.]\r\n" );
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document.write( "In trapezoid ABCE, since the diagonals AC and BE divide each other in the same\r\n" );
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document.write( "The two trapezoids share a common diagonal AC\r\n" );
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document.write( "In trapezoid ABCD, since the diagonals AC and BD divide each other in the same\r\n" );
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document.write( "Answer = 84 cm.\r\n" );
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document.write( "Edwin

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