I used this with my Geometry students to cover basic angle relationships (adjacent, complementary, supplementary, vertical, and linear pair). I printed it front and back. We folded them in half, wrote in our notes. We chose to do a definition and example on one side and an algebra problem to figure out the measure of a missing angle on the other side. We cut the top half to make it flip open for each angle name. We used these as part of our Interactive Notebooks.