document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=966544>Question 966544</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the area of a triangle with points A(-6,-10), B(4,-7), and C(-1,3) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #590741 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=590741\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the area of a triangle with points A(-6,-10), B(4,-7), and C(-1,3)<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Arrange the points like this:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "..A....B....C....A<BR>\n" );
document.write( "-6.....4...-1...-6<BR>\n" );
document.write( "-10...-7....3..-10<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Add the diagonal products starting at the upper left.<BR>\n" );
document.write( "-6*-7 + 4*3 + -1*-10 = 42 + 12 + 10 = 64<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Add the diagonal products starting at the lower left.<BR>\n" );
document.write( "-10*4 + -7*-1 + 3*-6 = -40 + 7 - 18 = -51<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "The difference = 125<BR>\n" );
document.write( "The area = 1/2 that, = 62.5 sq units\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );