NCERT Solutions for Class 8 Maths Chapter 3

NCERT Solutions for Class 8 Maths Chapter 3 UNDERSTANDING QUADRILATERALS in English and Hindi Medium updated for new academic session 2020-2021 based on latest NCERT Books for current year, useful to all students.

Download Prashnavali 3.1, Prashnavali 3.2, Prashnavali 3.3 and Prashnavali 3.4 in Hindi Medium and Exercise 3.1, Exercise 3.2, Exercise 3.3 and Exercise 3.4 in English Medium free to download in PDF format. These NCERT Solutions 2020-21 are applicable for all board using NCERT Books for their academic session 2020-2021. All the solutions are updated on the basis of latest CBSE Curriculum 2020-21. This chapter is based on closed figures like triangles, quadrilaterals and other polygons.

NCERT Solutions for Class 8 Maths Chapter 3

Class:8
Subject:Maths – गणित
Chapter 3:Understanding Quadrilaterals

Class 8 Maths Chapter 3 Solutions

Class 8 Maths Chapter 3 Understanding Quadrilaterals Exercise 3.1, Exercise 3.2, Exercise 3.3 and Exercise 3.4 in English Medium as well as Hindi Medium are given below to download in PDF form. Download Class 8 Maths App in English for offline use and कक्षा 8 गणित App in Hindi Medium for the academic session 2020-21.




Class 8 Maths Chapter 3 Exercise 3.1 Solutions in Videos

Class 8 Maths Chapter 3 Exercise 3.1 Explanation
Class 8 Maths Chapter 3 Exercise 3.1 Solution

Class 8 Maths Chapter 3 Exercise 3.2 Solutions in Videos

Class 8 Maths Chapter 3 Exercise 3.2 Explanation
Class 8 Maths Chapter 3 Exercise 3.2 Solution

Class 8 Maths Chapter 3 Exercise 3.3 Solutions in Videos

Class 8 Maths Chapter 3 Exercise 3.3 Explanation
Class 8 Maths Chapter 3 Exercise 3.3 Solution




Class 8 Maths Chapter 3 Exercise 3.4 Solutions in Videos

Class 8 Maths Chapter 3 Exercise 3.4 Explanation
Class 8 Maths Chapter 3 Exercise 3.4 Solution

More about Class 8 Maths Chapter 3

What is a regular polygon? State the name of a regular polygon of: (a) 3 sides (b) 4 sides (c) 6 sides

A regular polygon: A polygon having all sides of equal length and the interior angles of equal size is known as regular polygon.
(i) 3 sides
Polygon having three sides is called a triangle.

(ii) 4 sides
Polygon having four sides is called a quadrilateral.

(iii) 6 sides
Polygon having six sides is called a hexagon.

How many sides does a regular polygon have, if the measure of an exterior angle is 24 degree?

Let number of sides be n.
Sum of exterior angles of a regular polygon = 360
Number of sides = n = 360/24 = 15
Hence, the regular polygon has 15 sides.

क्या यह सम बहुभुज संभव है जिसके प्रत्येक बाह्य कोण की माप 22° हो?

नहीं
[क्योंकि 22° से 360° विभाज्य नहीं है]

एक सम बहुभुज की भुजाओं की संख्या ज्ञात कीजिए यदि इसका प्रत्येक अंतः कोण 165° का हो?

माना, भुजाओं की संख्या = n
बाह्य कोण = 180° – 165° = 15°
बहुभुज के बाह्य कोणों का कुल योग = 360°
भुजाओं की संख्या (n)
= (बहुभुज के बाह्य कोणों का कुल योग)/(प्रत्येक अंतः कोण की माप )
= (360°)/(15°)
= 24

अतः, सम बहुभुज की 24 भुजाएँ होंगी ।

In Chapter 3 Understanding Quadrilaterals, we will learn about plane surface and plane figures, different types of polygons like Triangles, Quadrilaterals, Pentagon, Hexagon, Heptagon, etc. Number of diagonals in each polygon, a brief description about CONVEX and CONCAVE polygons. Regular and irregular polygons having 3, 4, 5 and 6. Angle sum property of triangle and the questions based on the same fact to find the missing term. Questions based on sum of measure of exterior angles and questions related to Trapezium, Parallelogram, Kite to find the missing side or angle.

How To Prepare Class 8 Maths Chapter 3

इस पाठ में विभिन्न प्रकार के चतुर्भुजों के गुणों पर आधारित प्रश्न हैं। जैसे वर्ग की सभी भुजाएँ तथा सभी कोण सामान होते हैं, आयत की सम्मुख भुजाएँ सामान, सम्मुख कोण सामान तथा विकर्ण भी बराबर होते हैं। सम चतुर्भुज और आयत में केवल कोणों और विकर्णों का अंतर होता है। सम चतुर्भुज के विकर्ण बराबर नहीं होते परन्तु वर्ग के होते हैं। वर्ग का प्रत्येक कोण समकोण होता है परन्तु सम चतुर्भुज का नहीं। इस पाठ में सभी प्रश्न मुख्यतः बहुभुजों के गुणों पर आधारित हैं।



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NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.1
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.1 in PDF
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.1 free download
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.1 all questions
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.1 in english medium
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.2 in PDF form free
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.2 in english medium
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.3
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.3 in free pdf download
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.3 in english medium
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.3 updated for 2018-19
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.3 for mp, cbse board
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.4 in pdf form
NCERT Solutions for Class 8 Maths Chapter 3 Exercise 3.4 in english medium
8 Maths Exercise 3.1 Solutions
8 Maths Exercise 3.1 Solutions in hindi medium pdf
8 Maths Exercise 3.1 Solutions free to download
8 Maths Exercise 3.1 Solutions for all board in hindi
8 Maths Exercise 3.2 Solutions in hindi medium
8 Maths Exercise 3.2 Solutions in hindi medium pdf download
8 Maths solutions Exercise 3.3
8 Maths solutions Exercise 3.3 in hindi medium
8 Maths solutions Exercise 3.3 free guide download
8 Maths solutions Exercise 3.3 in pdf form free download
8 Maths solutions Exercise 3.4 in hindi medium pdf form
8 Maths solutions Exercise 3.4 free guide download