document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1027639>Question 1027639</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ABCD is a quadrilateral with A(1,1) B(9,25) C(15,23) D (0,-22). Find the exact area of ABCD.\r<BR>\n" );
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document.write( "How to find area of quadrilateral with uneven sides? Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #642880 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=642880\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use Co-ordinate geometry formula<BR>\n" );
document.write( "draw the diagonal for the quadrilateral\r<BR>\n" );
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document.write( "if (x1,y1),(x2,y2),(x3,y3)<BR>\n" );
document.write( " are the vertices of a triangle then its area is given by\r<BR>\n" );
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document.write( "|1/2(x1(y2&#8722;y3)+x2(y3&#8722;y1)+x3(y1&#8722;y2))|\r<BR>\n" );
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document.write( "A(1,1) B(9,25) C(15,23)\r<BR>\n" );
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document.write( "(x1,y1),(x2,y2),(x3,y3)\r<BR>\n" );
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document.write( "A=|(1/2)(1(23-25)+15(25-1)+9(1-23)|=80\r<BR>\n" );
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document.write( "A(1,1)  C(15,23) D (0,-22). \r<BR>\n" );
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document.write( "A= |(1/2)(1(-22-23)+15(1--22)+0)|=150\r<BR>\n" );
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document.write( "Calculate and add\r<BR>\n" );
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document.write( "to get the area of quadrilateral </SPAN>\n" );
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