Definition of Congruence

What Are Congruent Shapes

This video introduces all the nitty gritty of congruent shapes like: what are they, what are they not, does size matter, does orientation matter, mirroring, etc. Basic stuff but good stuff.

Definition of Corresponding Parts

This video introduces the concept of corresponding parts: what are they and what are they good for. This will end up being a really important concept in triangle proofs when we get into "CPCTC." What does that stand for? You don't want to know (but could find out with a quick search in the search bar above).