Getting an early grasp of triangles is important. If you know the relevant terms and concepts of triangles, you can apply that knowledge to arrive at an understanding of more complex and abstract geometry. Together in this set of six posters, you will see the following topics addressed: Triangle Terminology, Types of Triangles, Sum of Angles, Similar Proportions in Right Triangles, Ways to Determine Congruence, and the Pythagorean Theorem. Each of the posters measures 19" by 25".