# Rectangle and Parallelogram Calculator

Calculate the various properties of rectangle or parallelogram for given values.

## Formula : Area = base×height

## Formula : Perimeter = 2(base + height)

### Rectangle

In the case of rectangle all interior angles are right angles (90°) and opposite sides are parallel and equal in length. The rectangle is also known as quadrilaterals. The diagonals of rectangle are congruent.

### Parallelogram

In the case of parallelogram none of interior angles can not be right-angles(90°) and opposite sides are parallel and equal in length.

### Types of parallelogram

__Rhombus:__ The parallelogram which is having all equal sides. Means a parallelogram having four congruent sides. There are shapes like diamond, rhomb or lozenge.

__Rectangle: __The parallelogram which is having all right angles and the diagonals are equal. Means a parallelogram having four congruent interior angles.

__Square: __The parallelogram having all equal sides and all angles equal to 90 degrees. The diagonals of a square are also equal. Means the parallelogram having four congruent sides and four congruent interior angles.