Symmetry (Exercise 13.3)

  • by

Symmetry


Chapter 13


Exercise 13.3


EX 13.3 QUESTION 1.


Find the number of lines of symmetry in each of the following shapes. How will you check your answers?

Solution:

(a) 4 lines of symmetry.

(b) 1 line of symmetry.

(c) 2 lines of symmetry.

(d) 2 lines of symmetry.

(e) 1 line of symmetry.

(f) 2 lines of symmetry.


EX 13.3 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.

How did you go about completing the picture?

Solution:


EX 13.3 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?

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

Solution: