Class 6 Maths NCERT Solutions for Chapter 13 Symmetry Ex – 13.3

Symmetry

 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 28
Solution:
By drawing the line(s) of symmetry, we find that the number of line(s) possessed by them are
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 29

Question 2.
Copy the following drawing on squared paper. Complete each one of them such that the resulting figure has two dotted lines as two lines of symmetry:

NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 30
How did you go about completing the picture?

Solution:
Completing the figures using the given line(s) of symmetry. The completed figures are as under:
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 31

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 32
Try for O E M N P H L T S V X

Solution:
Taking the mirror image of the letters A and B in the given line. These will look as shown.
NCERT Solutions for Class 6 Maths Chapter 13 Symmetry 33
Clearly, A after reflection looks same but B does not.
It is due to the reason that the shape is preserved but sense is not.
Out of the given letters:
O, M, H, T, V, and X look as before after reflection, whereas E, P, N, L, and S does not.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus cursus rutrum est nec suscipit. Ut et ultrices nisi. Vivamus id nisl ligula. Nulla sed iaculis ipsum.