A parallelogram is a two-dimensional shape. It has four sides, in which two pairs of opposite sides are parallel. The parallelogram formula is used to calculate the area and perimeter of a parallelogram . Understand the parallelogram formula with derivation, examples, and FAQs. A parallelogram is a simple quadrilateral with two pairs of parallel sides. Every rectangle is a parallelogram , as well as every rhombus and square. Remember, it doesn't work the other way around! Which formulas does the parallelogram area calculator use? A diagonal of a parallelogram divides it into two congruent triangles, so the area of a parallelogram is twice the area of either of those triangles. Using the area formula for a triangle, the area of the parallelogram shown above is: Any parallelogram can be turned into a rectangle without changing its area. Therefore, the area of a parallelogram is also base times height. To calculate the area of a parallelogram , the base and height (altitude) of a parallelogram must be perpendicular.

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