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Parallelogram vs. Rectangle: What's the Difference?

Edited by Sara Rehman || By Sumera Saeed || Published on December 25, 2023
A parallelogram is a quadrilateral with opposite sides parallel; a rectangle is a parallelogram with all angles right angles.

Key Differences

A parallelogram is a four-sided shape where opposite sides are parallel and equal in length. A rectangle is a specific type of parallelogram where all four angles are right angles (90 degrees).
Sumera Saeed
Dec 25, 2023
In a parallelogram, opposite angles are equal, but the angles need not be right angles. In a rectangle, each angle is exactly 90 degrees, making it a regular form of parallelogram.
Sumera Saeed
Dec 25, 2023
The diagonals of a parallelogram bisect each other but are not necessarily equal. In a rectangle, the diagonals are equal in length, reflecting its more symmetrical properties.
Sara Rehman
Dec 25, 2023
A parallelogram can take various shapes, including a slanted rectangular shape, but does not have to have right angles. A rectangle, however, is always an equiangular parallelogram, with all angles and opposite sides equal.
Sumera Saeed
Dec 25, 2023
The area of a parallelogram is calculated by base times height (not necessarily perpendicular). For a rectangle, the area is calculated by length times width, with width being perpendicular to length.
Aimie Carlson
Dec 25, 2023
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Comparison Chart

Angles

Opposite angles equal, not necessarily 90°
All angles are 90°
Sumera Saeed
Dec 25, 2023

Sides

Opposite sides are parallel and equal
All opposite sides are parallel and equal
Sumera Saeed
Dec 25, 2023

Diagonals

Bisect each other, not necessarily equal
Equal in length and bisect each other
Sumera Saeed
Dec 25, 2023

Shape Variability

Can be slanted, no right angle requirement
Always equiangular, with right angles
Sumera Saeed
Dec 25, 2023

Area Calculation

Base times height
Length times width
Janet White
Dec 25, 2023
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Parallelogram and Rectangle Definitions

Parallelogram

A quadrilateral with both pairs of opposite sides parallel.
She cut the paper into a parallelogram.
Sumera Saeed
Dec 02, 2023

Rectangle

A parallelogram with four right angles.
The garden was designed in a perfect rectangle.
Sara Rehman
Dec 02, 2023

Parallelogram

A flat shape with straight sides where opposite sides are parallel.
The parallelogram's properties were crucial in solving the problem.
Sumera Saeed
Dec 02, 2023

Rectangle

A shape where the length is greater than the width, with right angles.
The tablecloth was cut in the shape of a rectangle.
Sumera Saeed
Dec 02, 2023

Parallelogram

A four-sided figure with opposite sides parallel.
The parallelogram on the board had equal but slanted sides.
Sumera Saeed
Dec 02, 2023

Rectangle

A four-sided figure with opposite sides equal and all angles 90 degrees.
He drew a rectangle to demonstrate a right angle.
Sumera Saeed
Dec 02, 2023

Parallelogram

A shape where opposite sides are equal in length and parallel.
The artist's parallelogram installation explored geometric forms.
Janet White
Dec 02, 2023

Rectangle

A quadrilateral with equal opposite sides and right angles.
The windows of the building were shaped like rectangles.
Janet White
Dec 02, 2023

Parallelogram

A quadrilateral with opposite angles equal.
In geometry class, we learned how to calculate the area of a parallelogram.
Aimie Carlson
Dec 02, 2023

Rectangle

A flat shape with four straight sides and four right angles.
She arranged the tiles in a rectangle pattern.
Sumera Saeed
Dec 02, 2023

Parallelogram

A four-sided plane figure with opposite sides parallel.
Sumera Saeed
Dec 01, 2023

Rectangle

A four-sided plane figure with four right angles.
Sumera Saeed
Dec 01, 2023

Parallelogram

(geometry) A convex quadrilateral in which each pair of opposite edges are parallel and of equal length.
Sumera Saeed
Dec 01, 2023

Rectangle

(geometry) Any quadrilateral having opposing sides parallel and four right angles.
Sumera Saeed
Dec 01, 2023

Parallelogram

Either of two rectangular areas (respectively the large parallelogram and the small parallelogram) abutting the goal line in front of the goal. (Since 1986 officially named the large rectangle and small rectangle, though the older names are still occasionally used.)
Sumera Saeed
Dec 01, 2023

Rectangle

(nontechnical) Such a quadrilateral that is oblong (longer than it is wide): one that is not regular (equilateral), that is, any except a square.
Sumera Saeed
Dec 01, 2023

Parallelogram

A right-lined quadrilateral figure, whose opposite sides are parallel, and consequently equal; - sometimes restricted in popular usage to a rectangle, or quadrilateral figure which is longer than it is broad, and with right angles.
Sumera Saeed
Dec 01, 2023

Rectangle

A four-sided figure having only right angles; a right-angled parallelogram.
Sumera Saeed
Dec 01, 2023

Parallelogram

A quadrilateral whose opposite sides are both parallel and equal in length
Sumera Saeed
Dec 01, 2023

Rectangle

Rectangular.
Sumera Saeed
Dec 01, 2023

Rectangle

A parallelogram with four right angles
Sumera Saeed
Dec 01, 2023

FAQs

Are the angles in a parallelogram equal?

Opposite angles are equal, but adjacent angles are supplementary (add up to 180 degrees).
Sara Rehman
Dec 25, 2023

Is a square a parallelogram?

Yes, a square is a special type of parallelogram with equal sides and angles.
Aimie Carlson
Dec 25, 2023

What is a parallelogram?

A parallelogram is a four-sided shape with opposite sides that are parallel and equal in length.
Sumera Saeed
Dec 25, 2023

Does a parallelogram have symmetry?

It has line symmetry along its diagonals.
Aimie Carlson
Dec 25, 2023

Are all sides of a parallelogram equal?

Not necessarily. Opposite sides are equal, but adjacent sides can be different.
Janet White
Dec 25, 2023

Are the diagonals of a parallelogram equal?

No, they are not necessarily equal but they bisect each other.
Aimie Carlson
Dec 25, 2023

Can a parallelogram be a rhombus?

Yes, if all sides are equal, it's a rhombus, which is a type of parallelogram.
Harlon Moss
Dec 25, 2023

Can a rectangle be a square?

Yes, if all sides are equal, it becomes a square.
Sumera Saeed
Dec 25, 2023

Can a parallelogram have right angles?

Yes, if all angles are right angles, it is a special type of parallelogram called a rectangle.
Sumera Saeed
Dec 25, 2023

How does a parallelogram differ from a rectangle?

In a rectangle, all angles are right angles, which is not a requirement for a parallelogram.
Sumera Saeed
Dec 25, 2023

Are all sides of a rectangle equal?

Opposite sides are equal, but adjacent sides can be different.
Sumera Saeed
Dec 25, 2023

How do you calculate the area of a rectangle?

Area = length × width.
Harlon Moss
Dec 25, 2023

Is a rectangle always a parallelogram?

Yes, by definition, a rectangle is a type of parallelogram.
Aimie Carlson
Dec 25, 2023

How do you calculate the area of a parallelogram?

Area = base × height.
Janet White
Dec 25, 2023

What is the perimeter formula for a rectangle?

Perimeter = 2(length + width).
Sumera Saeed
Dec 25, 2023

What is a rectangle?

A rectangle is a parallelogram with four right angles.
Aimie Carlson
Dec 25, 2023

Are all angles in a rectangle equal?

Yes, all four angles are equal to 90 degrees.
Harlon Moss
Dec 25, 2023

How many lines of symmetry does a rectangle have?

Two, along the midpoints of opposite sides.
Sumera Saeed
Dec 25, 2023

Does a rectangle have rotational symmetry?

Yes, it has rotational symmetry of 180 degrees.
Aimie Carlson
Dec 25, 2023

Are the diagonals of a rectangle equal?

Yes, they are equal in length and bisect each other.
Sumera Saeed
Dec 25, 2023
About Author
Written by
Sumera Saeed
Sumera is an experienced content writer and editor with a niche in comparative analysis. At Diffeence Wiki, she crafts clear and unbiased comparisons to guide readers in making informed decisions. With a dedication to thorough research and quality, Sumera's work stands out in the digital realm. Off the clock, she enjoys reading and exploring diverse cultures.
Edited by
Sara Rehman
Sara Rehman is a seasoned writer and editor with extensive experience at Difference Wiki. Holding a Master's degree in Information Technology, she combines her academic prowess with her passion for writing to deliver insightful and well-researched content.

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