RBSE Class 4 Maths Chapter 12 Solutions The Magic of Mirror

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RBSE Class 4 Maths Chapter 12 Question Answer The Magic of Mirror

The Magic of Mirror Class 4 Questions and Answers

The Magic of Mirror Class 4 Question Answer – InText

Page 94

Question 1.
Now takes square and circular paper and find symmetrical lines in them.

How many symmetrical lines did you find in the square paper?
Solution :
There are a total of 4 lines of symmetry in a square paper.
Note : A circle has infinite lines of symmetry.

Let’s Find Out

Question 2.
Write some English letters in your exercise book and make their mirror images and match them-

Solution :

Question 3.
Fold a square paper 4 times and cut any figure with scissor and identify the symmetrical figures formed when the paper is opened.

Solution :
Do it yourself.

RBSE Class 4th Maths Chapter 12 Question Answer – Exercise

Question 1.
Draw the lines of symmetry in the following figures which are symmètrical-

Solution :

Question 2.
Draw the lines of symmetry in all the figures given below-

Solution :

Question 3.
Find the lines of symmetry in the letters of the English alphabet and fill the table given below-

Solution :
(i) F, G J, L, N, P, Q, R, S, Z
(ii) A, B, C, D, E, K, M, T, U, V, W, Y
(iii) H, I, X
(iv) O

Question 4.
Complete the pictures given below on the line of symmetry-

Solution :

Question 5.
Match the symmetrical figure-

Solution :

RBSE Class 4 Maths Chapter 12 The Magic of Mirror Important Questions

Multiple Choice Questions-

Question 1.
What do we call the line on which the paper is folded?
(A) Asymmetric
(B) Symmetric
(C) Vertical line
(D) None of these
Answer:
(B) Symmetric

Question 2.
Which of the following can be divided into two identical halves?
(A) H
(B) J
(C) L
(D) N
Answer:
(A) H

Question 3.
The word that can be divided into two identical halves is-
(A) CUP
(B) BAT
(C) BID
(D) HEN
Answer:
(C) BID

Question 4.
The number of lines of symmetry in S is-
(A) 1
(B) 2
(C) 3
(D) 0
Answer:
(D) 0

Question 5.
The number of lines of symmetry in a circle is-
(A) 0
(B) 1
(C) 2
(D) Infinite
Answer:
(D) Infinite

Fill in the blanks

1. The number of lines of symmetry in the English alphabet letters A and B is _______.
Answer: 1

2. The English alphabet letter with two lines of symmetry is _______.
Answer: H or X

3. The English alphabet letter with more than three lines of symmetry is _______.
Answer: O

4. The mirror image of the letter Z is _______.
Answer: S

5. The figure that looks the same on both sides of a point or a line is a _______ figure.
Answer: symmetric

Select True/False for the following statements-

(i) A triangle with sides of equal length has three lines of symmetry. (True/False)
Answer: True

(ii) The mirror image of letter T is L. (True/False)
Answer: False

(iii) The mirror image of letter D is C. (True/False)
Answer: True

(iv) There is no line of symmetry in a circle. (True/False)
Answer: False

Very Short Answer Type Questions

Question 1.
How do C, P and E appear when seen in a mirror?
Solution :
C, P and E do not appear the same when seen in a mirror.

Question 2.
What is a line of symmetry called?
Solution :
If a figure is symmetrical on both sides of the indicated line and if we trace it on tracing paper and fold it, they completly cover each other. The line on which it is folded is called the line of symmetry.

Question 3.
How can  be divided into two identical halves?
Solution :

Question 4.
Complete this figure on the other side of the line of symmetry.

Solution :

Question 5.
In which of the given figures is the drawn line a line of symmetry? Find out.

Solution :
Apples and Scissors have a line of symmetry.

Short Answer Type Questions

Question 1.
Which of the following things in the picture are divided into similar parts?

Solution :
The following things in the given picture are divided into similar-looking parts.
(A) Sun
(B) Kite
(C) Fly
(D) Butterfly
(E) Football
(F) Pulley
(G) Frog
(H) Creeper leaf

Question 2.
Which of the remaining things in the picture will be divided into similar parts?
Solution :
The following remaining things will be divided into similar parts.
(i) Swing.
(ii) Ring lying on the ground.
(iii) Bush behind the swing.
(iv) Flower at the bottom of the creeper.
(v) Insect climbing on the creeper.
(vi) Another flower on the creeper.

Question 3.
(A) Some English and Hindi letters and mathematical numbers are written below. Can they be divided into parts that look similar?
(B) Can some letters and numbers be divided into two identical parts in more than one way (horizontal line/Vertical line)?
One has been done for you-

Solution :
(A) Yes, the following can be divided into identical looking parts.

(B) Yes, some letters and numbers can be divided into two identical-looking parts in more than one way.

Long Answer Type and Essay Type Questions-

Question 1.
Draw symmetry lines in the figures given below wherever possible.

Solution :

Question 2.
Below are some letters and their mirror images. Match the letters with their reflections.

Solution :