trustle > EngliSea > M > math > 20 Geometry > Matthew Salomone
 
 325.1 Introduction to Congruency
http://qindex.info/i.php?f=3746#3747
 
 325.1A What is Congruent? What is an Isometry?
http://qindex.info/i.php?f=3746#3748
 
 325.1B Overview of Triangle Congruency Criteria
http://qindex.info/i.php?f=3746#3756

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