document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=719616>Question 719616</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Determine whether ABCD is a rectangle by using the given set of vertices. Quadrilateral ABCD has vertices with coordinates A (4,1), B (5,3), C (7,3), and D (6,1). FIRST find the slopes of the pairs of opposite sides to first determine whether ABCD is a parallelogram. Is ABCD a parallelogram? \r<BR>\n" );
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document.write( "PLEASE HELP ME . </SPAN>\n" );
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