Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals.
Exercises from Illustrative Mathematics A set of exercises, commentary, and solutions. For this unit, choose:
G-CO Midpoints of the Sides of a Paralellogram G-CO Is this a parallelogram? G-CO Parallelograms and Translations