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Topic:  Simple Alternate Interior Angles Applet 
Related Item:  http://mathforum.org/mathtools/tool/1504/ 
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Subject:  Simple Alternate Interior Angles Applet 
Author:  Michael McKelvey 
Date:  May 4 2004 
This applet is very simple, but it accomplishes what it sets out to do, for the
most part. You can move the 2 parallel lines and the 2 intersecting lines
around and notice that the measures of the alternate angles always remain equal
as do the measures of the corresponding angles. It's helpful to see that
visually, but it would also be kind of nice if they showed the angle measures
for each angle as you moved the lines around, and perhaps if there were some
explanation on the page as to why these congruencies hold.
Michael

Posted for George Reese's C&I 336 class
University of Illinois
http://www.mste.uiuc.edu/courses/ci336sp04
 
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