Please copy down these 5 ways to prove triangles congruent into your notes.
This video shows how to prove 2 triangles are congruent using Side-Side-Side, Side-Angle-Side, Angle-Side-Angle, Angle-Angle-Side
Source: http://www.youtube.com/watch?v=OuIogyr_oo8&safe=active
This short video explains the only time that Side-Side-Angle theorem works (in a right triangle).
Source: http://www.youtube.com/watch?v=-x-raNlGjMo&safe=active
This is an example of a proof showing that 2 triangles are congruent.
Source: http://www.youtube.com/watch?v=a5KjdHqCvpI&safe=active
Here is another example of what a proof looks like
Source: http://www.youtube.com/watch?v=12Ok_sKhQYY&safe=active
This is page 2-3 of your proof packet that you received in class today. It is some examples to help you get started.
Source: http://www.educreations.com/lesson/view/proof-packet-pg-2-3/12954509/?ref=appemail
Recognizing congruent triangles and why
This is practice proving from start to finish