NCERT Solutions for Class 6 Maths Chapter 13 Symmetry Ex 13.3

Ncert Solutions For Class 6 Maths Chapter 13 Symmetry Ex 13.3 Ncert Maths Class 6 Chapter 13 Exercise 13.3 Symmetry Exercise 13.3

NCERT Solutions for Class 6 Maths Chapter 13 Symmetry Ex 13.3

Question 1.
Find the number of lines of symmetry in each of the following shapes. How will you check your answers?
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 39
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 40
Solution :
(a)
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 41
Number of lines of symmetry = 4
(b)
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 41
Number of lines of symmetry = 1
(c)
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 43
Number of lines of symmetry = 2
(d)
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 44
Number of lines of symmetry = 2
(e)
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 45
Number of lines of symmetry = 1
(f)
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 46
Number of lines of symmetry = 2

Question 2.
Copy the following drawing on squared paper. Complete each one of them such that the resulting figure has the two dotted lines as two lines of symmetry :
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 47
How did you go about completing the picture?
Solution :
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 48
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 49
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 50
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 51
Using the given lines of symmetry, we go about completing the picture.

Question 3.
In each figure alongside, a letter of the alphabet is shown along with a vertical line. Take the mirror image of the letter in the given line. Find which letters look the same after reflection (i.e., which letters look the same in the image) and which do not. Can you guess why?
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 52
Solution :
The letter A looks the same after reflection but not the letter B. The reason is that in reflection, the sense of direction changes. In the given letters, the letters O, M, N, H, T, V, and X look the same after reflections because these letters have a vertical line of symmetry.

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