document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1163139>Question 1163139</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 890.Trapezoid ABCD has parallel sides AB and CD, of lengths a and b respectively. Diagonals AC and BD intersect at E. Draw the line through E that is parallel to AB and CD, and let P and Q be its intersections with AD and BC respectively.<BR>\n" );
document.write( "(a) Prove that E is the midpoint of PQ.<BR>\n" );
document.write( "(b)Show that PQ=1/(0.5)(1/a + 1/b).   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #787150 by </B><A HREF=/tutors/aboutme.mpl?userid=AnlytcPhil><B>AnlytcPhil(1807)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=AnlytcPhil><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=AnlytcPhil><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=787150\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );