High School Resource Properties of Parallelograms by ECSDM This lesson is used classify figures according to their characteristics and begin coordinate geometry proofs. The figures included in this lesson are parallelograms, special parallelograms, trapezoids, kites and different types of triangles. Related NY State Academic Standards: G-CO.11, MST3.G.RP.7, MST3.G.RP.8 and more! Be sure to check out […]