Interactive, Publisher, National Library of Virtual Manipulatives
Top quality Java app to explore triangle congruency conditions SSS, SAS, AAS and the problems with SSA. User has to build two triangles from given components and show the result has to be (or not in the case of SSA) congruent.
11 October 2011 Edit: 4 April 2014
User submitted, thanks to Nordin Zuber