CLASS 7 MATH NCERT SOLUTIONS FOR CHAPTER – 14 SYMMETRY EX – 14.2

Symmetry

1. Which of the following figures have rational symmetry of order more than 1:

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 87

Solution:-

(a)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 88

So, the above figure has its rotational symmetry as 4.

(b)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 89

So, the above figure has its rotational symmetry as 3.

(c) So, the given figure has only one rotational symmetry.

(d)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 90

So, the above figure has its rotational symmetry as 2.

(e)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 91

So, the above figure has its rotational symmetry as 3.

(f)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 92

So, the above figure has its rotational symmetry as 4.

By observing all the figures (a), (b), (c), (d), (e) and (f) have rotational symmetry of order more than 1.

2. Give the order of rotational symmetry for each figure:

(a)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 93

Solution:-

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 94

The above figure has its rotational symmetry as 2.

(b)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 95

Solution:-

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 96

The above figure has its rotational symmetry as 2.

(c)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 97

Solution:-

98″ alt=”NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 98″ />

The above figure has its rotational symmetry as 3.

(d)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 99

Solution:-

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 100

The above figure has its rotational symmetry as 4.

(e)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 101

Solution:-

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 102

The above figure has its rotational symmetry as 4.

(f)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 103

Solution:-

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 104

The above figure has its rotational symmetry as 5.

(g)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 105

Solution:-

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 106

The above figure has its rotational symmetry as 6.

(h)

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 107

Solution:-

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Image 108

The above figure has its rotational symmetry as 3.

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