KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1

Students can Download Chapter 14 Symmetry Ex 14.1, Question and Answers, Notes Pdf, KSEEB Solutions for Class 7 Maths, Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations.

Karnataka State Syllabus Class 7 Maths Chapter 14 Symmetry Ex 14.1

Question 1.
Copy the figures with punched holes and find the axes of symmetry for the following :
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 1
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 2

 

KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 3
The dotted lines are the axes of symmetry for the above figs.

Question 2.
Given the line(s) of symmetry, find the other hole(s) :
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 4
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 5

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Question 3.
In the following figures, the mirror line (i.e., the line of symmetry) is given as a dotted line. Complete each figure performing reflection in the dotted (mirror) line. (You might perhaps place a mirror along the dotted line and look into the mirror for the image). Are you able to recall the name of the figure you complete ?
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 6
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 7
The dotted lines are the axes of symmetry for the above figs.

Question 2.
Given the line(s) of symmetry, find the other hole(s) :
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 8
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 9

Question 3.
In the following figures, the mirror line (i.e., the line of symmetry) is given as a dotted line. Complete each figure performing reflection in the dotted (mirror) line. (You might perhaps place a mirror along the dotted line and look into the mirror for the image). Are you able to recall the name of the figure you complete ?
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 10
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 11

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Question 4.
The following figures have more than one line of symmetry. Such figures are said to have multiple lines of symmetry.
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 12
Identify multiple lines of symmetry, if any, in each of the following figures:
a) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 13
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 131

b) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 132
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 14

 

c) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 15
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 151

 

d) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 152
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 153

 

e) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 154
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 155

f) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 156
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 157

 

g) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 158
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 159

h) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 160
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 161

Question 5.
Copy the figure given here :
Solution:
Take any one diagonal as a line of symmetry and shade a few more squares to make the figure symmetric about a diagonal. Is there more than one way to do that? will the figure be symmetric about both the diagonals?
Yes, there is more than one way to make the figure symmetric.
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 142
i) Let us take the diagonal BD and shade the squares as shown in the figure to make the figure symmetric about BD.
ii) Similarly the figure is symmetric about the diagonals.
iii) The figure is symmetric about EF and GH also.
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 16

Question 6.
Copy the diagram and complete each shape to be symmetric about the mirror line(s)
Take any one diagonal as a line of symmetry and shade a few more squares to make the figure symmetric about both the diagonals?
Solution:
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 17

KSEEB Solutions

Question 7.
State the number of lines of symmetry for the following figures.
Solution:
a)
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 18
3 lines of symmetry.

b)
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 19
1 line of symmetry

c)
KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 20
Zero or No lines of symmetry.

d) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 21
4 lines of symmetry

e) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 22
2 lines of symmetry

f) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 23
2 lines of symmetry

g) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 24
Zero or No lines of symmetry

h) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 25
Zero or No lines of symmetry

i) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 26
6 lines of symmetry

j) KSEEB Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.1 27
Many or Infinite number of symmetry.

Question 8.
What letters of the English alphabet have reflectional symmetry (i.e. symmetry related to mirror reflection) about.
a. a vertical mirror
A H I M O T U V W X Y
These letter have vertical symmetry

b. a horizontal mirror
B C D E H I O X
These letter have horizontal symmetry.

c. both horizontal and vertical mirrors
H I O X
These have both horizontal and vertical symmetry

Question 9.
Give three examples of shapes with no line of symmetry.
Solution:
1) Quadrilateral
2) Scalene triangle
3) Parallelogram
Have no line of symmetry.

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Question 10.
What other names can you give to the line of symmetry of
a) an isosceles triangle?
b) a circle?
Solution:
a) The line of symmetry in an isosceles triangle is also known as Median.
b) The line of symmetry in a circle is also called Diameter.

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