How to Classify Quadrilaterals: Brighterly Guide for Kids

Table of Contents

    When studying geometry, one essential skill is the ability to classify quadrilaterals. Quadrilaterals — those shapes with four sides — are as much a part of a child’s world as the games they play and the stories they read. Imagine a world where every tile on the floor, every window frame, and every board screen is a canvas for geometric exploration. 

    Learning how to identify and classify quadrilaterals is like embarking on a grand adventure. Imagine a treasure map where each corner of the quadrilateral leads to a different kind. As children delve into this world of angles, aspects, and symmetries, they are equipped with tools to unlock the secrets of shapes. In this comprehensive guide, we journey to demystify the art of learning how to classify and compare quadrilaterals.

    How Do you Classify Quadrilaterals Accurately?

    Quadrilaterals’ various properties make them an essential subject in mathematics. We can better understand their unique traits and relationships by examining the different classification systems used to classify quadrilaterals. Now, how can you classify quadrilaterals with confidence? Let’s begin by examining the shape’s angles, sides, and properties.


    Parallelograms are a class of quadrilaterals that possess several distinctive properties. One of its defining features is that opposite sides are parallel and congruent, which means they have the same length. Opposite angles in a parallelogram are congruent, ensuring that opposite angles have equal measures.


    Rectangles are a specific type of parallelogram that has unique properties. Notably, rectangles possess all the properties of a parallelogram with more emphasis on right angles. All angles of a rectangle are 90 degrees, which results in four right angles. The diagonals of the rectangle are congruent, and they divide each other at an angle of 90 degrees. 


    Squares represent a particular case within the world of rectangles. These quadrilaterals possess all the attributes of rectangles, including congruent right angles and diagonals. However, squares take symmetry to another level by ensuring that all sides are of equal length. As a result, squares are quadrilaterals with four right angles and four sides of equal measure. 


    Trapezoids present a departure from the symmetry found in parallelograms and rectangles. In this class of quadrilaterals, one pair of opposite sides is parallel, while the remaining two are not. This arrangement leads to unequal side lengths and angle measures. Trapezoids do not have the same level of symmetry as other quadrilaterals, which makes them useful in scenarios where asymmetry or angular relationships are desired.


    Rhombuses are another subset of parallelograms that emphasize equilateral features. In a rhombus, the four sides are of equal length, ensuring the shape is balanced and symmetrical. The diagonals of the rhombuses intersect at right angles, providing an extra layer of precision and symmetry.

    Now, let’s check out some of the Questions and Answers on some of these classified Quadrilaterals.

    Example 1

    If the base of a parallelogram is 10 units and the height is 6 units, what is its area?

    Answer: The area of ​​a parallelogram (A) is A = base x height = 10 units x 6 units = 60 square units.

    Example 2

    The length of the rectangle is 12 meters, and its width is 8 meters. What is its perimeter?

    Answer: The perimeter of the rectangle (P) is P = 2 x (length + width) = 2 x (12 meters + 8 meters) = 40 meters.

    Example 3

    If the side length of a square is 5 centimeters, what is the length of its diagonal?

    Answer: The diagonal (d) of the square is d = √ (side length ^2 + side length ^2) = √2 x 5 centimeters 7.07 cm.

    Example 4

    In a trapezoid, the base of one is 6 units, the base of the other is 10 units, and the height is 8 units. What is its area?

    Answer: The area (a) of a trapezoid is a = (1/2) x (sum of the bases) x height = (1/2) x (6 units + 10 units) x 8 units = 64 square units.

    Use Brighterly Worksheets to Classify Quadrilaterals

    Are you unsure how to classify quadrilaterals? Fear not, as understanding the process is simpler than you might think. In your quest to master quadrilateral classes, you are fortunate to have a valuable companion in Brighterly’s worksheets. These dynamic educational tools transform the learning experience, providing a platform for applying practical knowledge and improving classification skills. 

    With a wide range of carefully designed exercises, these worksheets meet the needs of learners of all levels, offering interactive challenges that encourage hands-on learning.

    Brighterly worksheets also include a classify quadrilaterals game or puzzle that challenges their geometric abilities. As they progress through the game, it enhances their ability to differentiate between quadrilateral types, making geometry an enjoyable and educational experience.


    When studying geometry, you should be ready to learn how to classify quadrilaterals geometry accurately. As you have now concluded this introductory journey through the ways to classify the quadrilaterals, you have emerged enriched with a deeper appreciation for the various shapes surrounding us. All you have to do now is practice. And if you are interested in how to use a classify quadrilaterals worksheet answer key to improve your learning experience, look no further than the Brighterly worksheet tools. 

    Brighterly’s comprehensive collection of interactive worksheets and engaging exercises empowers learners to master complex concepts while enjoying the process. Whether you’re a student seeking to excel or an enthusiast of geometric wonders, Brighterly offers a unique platform to delve deeper into shapes and lines. So, register now to become a part of the journey toward math mastery.

    Kid’s grade

    • Grade 1
    • Grade 2
    • Grade 3
    • Grade 4
    • Grade 5
    • Grade 6
    • Grade 7
    • Grade 8
    Image full form