document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=983921>Question 983921</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Why must the base and height of a parallelogram intersect at a right angle?  </SPAN>\n" );
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document.write( "Why must the base and height of a parallelogram intersect at a right angle? \r<BR>\n" );
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document.write( "The altitude (or height) of a parallelogram is the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=perpendicular ALIGN=MIDDLE  ALT=\"perpendicular\"   DISABLED_style= \"max-width:90%; height:auto;\" > distance (perpendicular line segments form <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=90 ALIGN=MIDDLE  ALT=\"90\"   DISABLED_style= \"max-width:90%; height:auto;\" > degree angle, or  perpendicular lines- means lines that form right angles) from the base to the opposite side (which may have to be extended). </SPAN>\n" );
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