Firming up things that work entails recognition of things that
do not work. In the case of triangle congruence, that brings up the issue of SSA
congruence. This creation helps confirm that SSA is not a congruence relationship,
while also firming up the idea that one of the congruence requirements is "the
same shape". The original file can be found here.
Back to my personal geoGebra pages.
http://www.davemath.com
