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NCERT Solutions for Class 8 Maths, Chapter 3 - Understanding Quadrilaterals

The word ‘Quadrilateral’ is derived from the Latin words ‘quadri’ (meaning ‘four’) and
‘latus’ meaning ‘side’. So, a Quadrilateral basically means ‘four sides’. A Quadrilateral is a
a geometrical dimensional figure having four sides (edges) and four vertices (corners).
The sum of all the interior angles of a ‘quadrilateral’ is 360°. Quadrilaterals can be regular or irregular. There are different types of quadrilaterals based on their unique
properties such as a square, rectangle, kite, parallelogram, rhombus, and more. It is
important to get in-depth knowledge of quadrilaterals as our world is full of
quadrilaterals such as mobile phones, laptop, chart paper, books, TV, doors and the list
just goes on.

Let’s take a look at topics and sub-topics of Class 8 Maths Chapter 3, Understanding Quadrilaterals

3.1 Introduction
3.2 Polygons
3.3 Sum of the Measures of the Exterior Angles of a Polygon
3.4 Kinds of Quadrilaterals
3.5 Some Special Parallelograms

In Class 8 Maths Chapter 3, one will learn -

Section 3.2 - In this section, you’ll learn what a polygon is, classification of polygons,
diagonals, convex and concave polygons, regular and irregular polygons, angle sum
property and more.

Section 3.3 - In this section, you’ll study the exterior and interior angles of a
polygon and will be able to find the number of sides of a regular polygon whose exterior
angles are given.

Section 3.4 - In this section, you’ll learn different kinds of Quadrilaterals based on the
nature of the sides or angles of a quadrilateral, such as a trapezium, kite, parallelogram
and its elements, diagonals and angles.

Section 3.5 - In this section, you’ll acquire knowledge about some more special
parallelograms such as rhombus, rectangle and square.

Several examples are provided, along with their solutions for a clear understanding of
Quadrilaterals. To know more about the Class 8 Maths Chapter 3 Understanding
Quadrilaterals, you should explore the exercises below. You can also download the
Understanding Quadrilaterals Class 8 NCERT Solutions PDF, solved by expert Maths trainers.

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