This one page document can be used in the following ways: 1) print it out and have students cut out the four postulates and glue them in their interactive notebooks and complete a proof next to each one 2) made into a reference sheet for each student to have when completing proofs 3) Made into an 11x17 poster as an anchor guide on your classroom wall *Note: the triangles at the bottom of each postulate are for you or your students to mark up according to the postulate for some hands on experience. Colors are recommended but not necessary! I chose option #2 and saw my students looking back at this sheet often to confirm they chose the right postulate. Check out my Geoemtric Proofs Bundle for more resources!