NCERT Solutions for Class 7 Maths Exercise 14.2 Chapter 14 Symmetry in simple PDF are available here. This exercise of NCERT Solutions for Class 7 Maths Chapter 14 contains topics related to rotational symmetry. Students who wish to score good marks in Maths practise NCERT Solutions for Class 7 Chapter 14.
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1. Which of the following figures have rational symmetry of order more than 1:
Solution:-
(a)
So, the above figure has its rotational symmetry as 4.
(b)
So, the above figure has its rotational symmetry as 3.
(c) So, the given figure has only one rotational symmetry.
(d)
So, the above figure has its rotational symmetry as 2.
(e)
So, the above figure has its rotational symmetry as 3.
(f)
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)
Solution:-
The above figure has its rotational symmetry as 2.
(b)
Solution:-
The above figure has its rotational symmetry as 2.
(c)
Solution:-
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The above figure has its rotational symmetry as 3.
(d)
Solution:-
The above figure has its rotational symmetry as 4.
(e)
Solution:-
The above figure has its rotational symmetry as 4.
(f)
Solution:-
The above figure has its rotational symmetry as 5.
(g)
Solution:-
The above figure has its rotational symmetry as 6.
(h)
Solution:-
The above figure has its rotational symmetry as 3.