A parallelogram close parallelogram A quadrilateral with opposite pairs of sides that are both equal in length and parallel. Opposite angles are equal. can be cut and rearranged to form a ...

In parallelograms, diagonally opposite angles are also equal. Rhombus. A rhombus is a quadrilateral where all sides are equal and opposite sides are parallel. In a rhombus, ...

(Motivate) In a parallelogram opposite angles are equal, and conversely. 4. (Motivate) A quadrilateral is a parallelogram if a pair of its opposite sides is parallel and equal. 5.