document.write( "Question 1086567: Show that the points (1,4),(7,0),(5,-3).and (-1,1) are the verticles of a rectangle and find its area. \n" ); document.write( "
Algebra.Com's Answer #700864 by Edwin McCravy(20055)\"\" \"About 
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document.write( "Use the slope formula to find the slopes of all\r\n" );
document.write( "four sides.  Then show that the sides that are perpendicular\r\n" );
document.write( "have slopes that are opposite signed reciprocals, and that\r\n" );
document.write( "the parallel sides have equal slopes.\r\n" );
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document.write( "Then use the distance formula to find the length and width.\r\n" );
document.write( "Multiply them to find the area.\r\n" );
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document.write( "Edwin
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