Learn the six properties of a parallelogram , such as opposite sides and angles are equal and congruent, and the diagonals bisect each other. Also, find the formula for the parallelogram law and examples of problems involving parallelograms. Learn the six properties of a parallelogram related to its angles, sides, and diagonals. See how to compare and contrast a parallelogram and a rectangle with figures and diagrams. Different Types of Parallelograms What Are the Properties of a Parallelogram ? A quadrilateral is a special type of polygon, which can be known as a parallelogram if it contains two parallel opposite sides. A parallelogram has the following properties : A parallelogram is a two-dimensional geometrical shape whose opposite sides are equal in length and are parallel. The opposite angles of a parallelogram are equal in measure and the Sum of adjacent angles of a parallelogram is equal to 180 degrees. A parallelogram is a four-sided polygon (quadrilateral) and, it has the following key properties :
