Proving Triangles Congruent by SSS and SAS
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http://www.youtube.com/watch?v=XkgBor7uI3A (THIS ONE includes a segment addition proof...)
http://www.youtube.com/watch?v=_O5qrryg4Ps
This one includes corresponding parts of congruent triangles...CPCTC
http://www.youtube.com/watch?v=Q0ZUKd6AZys
Here is a very short one...without proofs...
