document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1199552>Question 1199552</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I've been trying to use the same formula that I use to find the area of a triangle but it is not giving me the correct answer.\r<BR>\n" );
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document.write( "Find the area of the parallelogram with the following vertices:\r<BR>\n" );
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document.write( "11. (-2, 3), (5, 8), (3, 3), and (0, 8)\r<BR>\n" );
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document.write( "A. 16 sq units<BR>\n" );
document.write( "B. 20 sq units<BR>\n" );
document.write( "C. 34 sq units<BR>\n" );
document.write( "D. 18 sq units<BR>\n" );
document.write( "E. 25 sq units<BR>\n" );
document.write( "F. 36 sq units\r<BR>\n" );
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document.write( "12. (-2, 7), (-4, 4), (-11, 4), and (-9, 7)\r<BR>\n" );
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document.write( "A. 15 sq units<BR>\n" );
document.write( "B. 63 sq units<BR>\n" );
document.write( "C. 28 sq units<BR>\n" );
document.write( "D. 21 sq units<BR>\n" );
document.write( "E. 36 sq units<BR>\n" );
document.write( "F. 14 sq units<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #833495 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=833495\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Part &nbsp;&nbsp;(a) \r<BR>\n" );
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document.write( "If you draw the given points in a coordinate plane, you will see\r<BR>\n" );
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document.write( "(even with unarmed eye) &nbsp;that one pair of sides is horizontal &nbsp;&nbsp;(y = 3 &nbsp;&nbsp;and &nbsp;&nbsp;y = 8) &nbsp;of the length of &nbsp;5 &nbsp;units, \r<BR>\n" );
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document.write( "while the height of the parallelogram (the distance between its parallel horizontal sides) &nbsp;is &nbsp;8 - 3 = 5 &nbsp;units.\r<BR>\n" );
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document.write( "It gives the area  &nbsp;5*5 = 25 &nbsp;square units.\r<BR>\n" );
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document.write( "In part &nbsp;(b), &nbsp;the same reasoning does work, &nbsp;allowing you to get the answer &nbsp;MENTALLY.\r<BR>\n" );
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document.write( "At the beginning of your post you write\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\" I've been trying to use the same formula that I use to find \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the area of a triangle but it is not giving me the correct answer. \"\r<BR>\n" );
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document.write( "It is not surprising, &nbsp;because you have no any reason to use <BR>\n" );
document.write( "\" the same \"  &nbsp;formula for totally different problem.\r<BR>\n" );
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document.write( "It is like jumping off a tower upside down into a swimming pool with no water.\r<BR>\n" );
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document.write( "In opposite, &nbsp;it would be surprising if this formula would work.\r<BR>\n" );
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