This foldable provides a nice overview of triangle proofs. There are 5 tabs: SSS, SAS, HL, ASA, AAS. Under each tab, I have written the postualte or theorem. There is another option which is left blank to allow students to take notes on the postualtes or theorems. Within the foldable, there are also 10 examples, where students will be asked to provided the theorem or postulate necessary to prove that the given triangles are congruent. This is a GREAT item for interactive notebooks.