﻿ NCERT Solutions CBSE Class 8 Maths Chapter 3 | Understanding Quadrilaterals

1.  Introduction
2. Polygons
1. Classification of polygons
2. Diagonals
3. Convex and concave polygons
4. Regular and irregular polygons
5. Angle Sum Property
3. Sum of the Measures of the Exterior Angles of a Polygon
1. Trapezium
2. Kite
3. Parallelogram
4. Elements of a parallelogram
5. Angles of a parallelogram
6.  Diagonals of a parallelogram
5. Some Special Parallelogram
1. Rhombus
2. A rectangle
3. A square

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Quadrilaterals are simply the four-sided figures. However, these have different kinds according to their properties. The CBSE curriculum of class 8th includes the study of quadrilaterals in math. The students learn about polygons, their properties, solutions of the exterior angles, and different kinds of quadrilaterals as well.

With the course provided by ScoreX™, you can complete the study of the CBSE class 8 Maths chapter 3.

What is the format of this chapter course?

The course of the Class 8 Maths Ch-3 Understanding Quadrilaterals includes topics that you have in your school book.

1. Polygons

Polygons are the plane figures that have three or more straight sides. The topic helps you learn following concepts:

·         Classification of polygons

·         Diagonals

·         Convex and concave polygons

·         Regular and irregular polygons

·         Angle Sum Property

2. Sum of the Measures of the Exterior Angles of a Polygon

The sum of the measures of exterior angles of a polygon is studied. The formula and rules are provided to find the missing angles in a polygon.

Quadrilaterals have different types depending upon the number of sides, and shapes. You learn about:

·         Trapezium

·         Kite

·         Parallelogram

·         Elements of a parallelogram

·         Angles of a parallelogram

·         Diagonals of a parallelogram

4. Some Special Parallelogram

A parallelogram is a four-sided shape having parallel opposite sides. The topic helps you know about following types of parallelograms:

·         Rhombus

·         A rectangle

·         A square

So, get the course now and start your in-depth learning of the chapter without wasting your time.

1. Q.No 1 - During World War I Germany was defeated in the Battle of Verdun on the western front and Romania declared war on the eastern front in the year

1/10
2. Q.No 2 - Look carefully for the pattern, and then choose which pair of numbers comes next 42, 40, 38, 35, 33, 31, 28

25, 22

26,23

26, 24

26,22

None

2/10
3. Q.No 3 - In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs?

6.25

6.5

6.75

7

None

3/10
4. Q.No 4 - 1, 2, 3, 5, 8, ?

11

13

15

9

None of the above

4/10
5. Q.No 5 - 22, 42, 64, 88, ?

114

112

116

110

None of the above

5/10
6. Q.No 6 - 17, 14, 14, 11, 11, 8, 8 What comes next?

8,5

5,2

7,7

5,5

None

6/10
7. Q.No 7 - Look carefully for the pattern, and then choose which pair of numbers comes next 9, 16, 23, 30, 37, 44, 51

59,66

58,65

54, 61

56,62

None

7/10
8. Q.No 8 - Find the wrong number in the following series. 1250, 1322 , 1452, 1674, 2024 , 2544

1250

1674

2544

2024

None

8/10
9. Q.No 9 - A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:

650

690

698

700

None

9/10
10. Q.No 10 - The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

0

1

10

19

None

10/10