document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=973512>Question 973512</A>: <I><SPAN STYLE=\"word-break: break-all;\"> So I took a state test today and I'm not sure if I messed up or if I will get partial credit for my work, but here goes.<BR>\n" );
document.write( "We had to prove a quadrilateral was a rectangle and I showed that all the adjacent slopes were negative reciprocal giving it all right angles. <BR>\n" );
document.write( "IS THAT ENOUGH?<BR>\n" );
document.write( "Did I have to show it was a parallelogram first?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #595685 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=595685\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I say your answer should get full credit.<BR>\n" );
document.write( "It proves it is a rectangle, and does so efficiently.<BR>\n" );
document.write( "A quadrilateral with four right angles has  to be a rectangle.<BR>\n" );
document.write( "If all four corners were right angles, opposite sides had to be parallel. </SPAN>\n" );
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