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A parallelogram has 2 sets of parallel sides. The opposite sides  are equal in length and opposite angles are equal. Examples of  parallelograms are squares, rectangles and â¦ rhombuses. You can find  the perimeter of a parallelogram by doubling the base+side length. 6 people found this useful.
Types of Quadrilaterals--Parallelograms. If a quadrilateral has two pairs of parallel opposite sides, then it is called a parallelogram. Parallel sides in a parallelogram are also congruent in length. In addition, because opposite sides are parallel, opposite angles are congruent as well. An example of a parallelogram, with congruent parts identified, is shown below. As with the trapezoid, we can derive a formula for the area of a parallelogram by dividing it into a rectangle and two triangles.