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Joy of Mathematics Class 8 Solutions Chapter 18 Symmetry Reflection and Rotation
Welcome to NCTB Solution. Here with this post we are going to help 8th class students for the Solutions of Joy of Mathematics Class 8 Book, Chapter 18 Symmetry Reflection and Rotation. Here students can easily find step by step solutions of all the problems for Symmetry Reflection and Rotation. Exercise wise proper solutions for every problems. All the problem are solved with easily understandable methods so that all the students can understand easily. Here students will find solutions for Exercise 18.1 and 18.2
Symmetry Reflection and Rotation Exercise 18.1 Solution
Question no – (1)
Solution :
(a) Required figure –
So, It is an isolated triangle. An isolated triangle has one line of symmetry.
Drawing :
(b) Required figure –
So, It is a square. A square has four lines of symmetry long the diagonals and the lines joining the midpoints of the opposite sides.
Drawing :
(c) Required figure –
It is an angle. An angle has only one of symmetry.
Drawing :
(d) Required figure –
This is circle and a circle has infinite number of line of symmetry.
and, there also a equilateral triangle. it has three lines of symmetry.
Question no – (2)
Solution :
As per the given question,
(a) The capital letters of the English alphabet which point symmetry are H, I, O, X, S, N, Z.
(b) Here, the letters are, H, I, O, X.
Question no – (3)
Solution :
Therefore, Number of axes symmetry of the figure are 6, 1 and 2.
Question no – (4)
Solution :
(a) Required figure –
Line symmetry :
(b) Required figure –
Line symmetry :
(c) Required figure –
Line symmetry :
Question no – (5)
Solution :
According to the given question,
Required figure –
Here, the number of line symmetry point is = M
Symmetry Reflection and Rotation Exercise 18.2 Solution
Question no – (1)
Solution :
Mirror image :
(a)
(b)
(c)
Question no – (2)
Solution :
Rotational Symmetry
(a)
(b)
(c)
Previous Chapter Solution :
