• Skip to main content
  • Skip to secondary menu
  • Skip to primary sidebar
  • Skip to footer

CBSE Tuts

CBSE Maths notes, CBSE physics notes, CBSE chemistry notes

  • NCERT Solutions
    • NCERT Solutions for Class 12 English Flamingo and Vistas
    • NCERT Solutions for Class 11 English
    • NCERT Solutions for Class 11 Hindi
    • NCERT Solutions for Class 12 Hindi
    • NCERT Books Free Download
  • TS Grewal
    • TS Grewal Class 12 Accountancy Solutions
    • TS Grewal Class 11 Accountancy Solutions
  • CBSE Sample Papers
  • NCERT Exemplar Problems
  • English Grammar
    • Wordfeud Cheat
  • MCQ Questions

NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.2

CBSE students can refer to NCERT Solutions for Class 7 Maths Chapter 14 Symmetry Ex 14.2 Textbook Questions and Answers are provided by experts in order to help students secure good marks in exams.

Class 7 Maths NCERT Solutions Chapter 14 Symmetry Ex 14.2

Question 1.
Which of the following figures have rotational symmetry of order more than 1:
(a)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 137
(b)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 138
(c)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 139
(d)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 140
(e)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 141
(f)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 142
Solution:
Figures (a), (b), (d), (e), and (f) have rotational symmetry of order more than 1.

Question 2.
Give the order of rotational symmetry for each figure :
(a)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 143
Solution:
Let us mark a point A on each figure and also indicate the angle through which the figure is to be rotated as under :
NCERT Solutions for Class 7 maths Algebraic Expreesions img 151

(b)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 144
Solution:
Let us mark a point A on each figure and also indicate the angle through which the figure is to be rotated as under :
NCERT Solutions for Class 7 maths Algebraic Expreesions img 152

(c)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 145
Solution:
Let us mark a point A on each figure and also indicate the angle through which the figure is to be rotated as under :
NCERT Solutions for Class 7 maths Algebraic Expreesions img 153

(d)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 146
Solution:
Let us mark a point A on each figure and also indicate the angle through which the figure is to be rotated as under :
NCERT Solutions for Class 7 maths Algebraic Expreesions img 154

(e)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 148
Solution:
Let us mark a point A on each figure and also indicate the angle through which the figure is to be rotated as under :
NCERT Solutions for Class 7 maths Algebraic Expreesions img 156

(f)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 149
Solution:
Let us mark a point A on each figure and also indicate the angle through which the figure is to be rotated as under :
NCERT Solutions for Class 7 maths Algebraic Expreesions img 157

(g)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 147
Solution:
Let us mark a point A on each figure and also indicate the angle through which the figure is to be rotated as under :
NCERT Solutions for Class 7 maths Algebraic Expreesions img 155

(h)
NCERT Solutions for Class 7 maths Algebraic Expreesions img 150
Solution:
Let us mark a point A on each figure and also indicate the angle through which the figure is to be rotated as under :
NCERT Solutions for Class 7 maths Algebraic Expreesions img 158

Now to find the rotational symmetry, we proceed as under :

In figure (a): it requires two rotations, each through an angle of 180°, about the marked point (x) to come back to its original position. So, its rotational symmetry is of order 2.

In figure (b): It requires two rotations, each through an angle of 180°, about the marked point (x) to come back to its original position. So, its rotational symmetry is of order 2.

In figure (c): The triangle requires three rotations, each through an angle of 120° about the marked point to come back to its original position. So, it has rotational symmetry of order 3.

In figure (d): The figure requires four rotations, each through an angle of 90°, about the marked point (x) to come back to its original position. So, its rotational symmetry is of order 4.

n figure (e): The figure requires four rotations, each through an angle of 90°, about the marked point (x) to come back to its original position. So, its rotational symmetry is of order 4.

In figure (f): The regular pentagon requires five rotations, each through an angle of 72°, about the marked point to come back to its original position. So, it has rotational symmetry of order 5.

In figure (g): The figure requires six rotations, each through an angle of 60°, about the marked point to come back to its original position. So, it has rotational symmetry of order 6.

In figure (h): The figure requires three rotations each through an angle of 120°, about the marked point to come back to its original position. So, it has rotational symmetry of order 3.

Primary Sidebar

NCERT Exemplar problems With Solutions CBSE Previous Year Questions with Solutoins CBSE Sample Papers
  • The Summer Of The Beautiful White Horse Answers
  • Job Application Letter class 12 Samples
  • Science Lab Manual Class 9
  • Letter to The Editor Class 12 Samples
  • Unseen Passage For Class 6 Answers
  • NCERT Solutions for Class 12 Hindi Core
  • Invitation and Replies Class 12 Examples
  • Advertisement Writing Class 11 Examples
  • Lab Manual Class 10 Science

Recent Posts

  • Understanding Diversity Question Answer Class 6 Social Science Civics Chapter 1 NCERT Solutions
  • Our Changing Earth Question Answer Class 7 Social Science Geography Chapter 3 NCERT Solutions
  • Inside Our Earth Question Answer Class 7 Social Science Geography Chapter 2 NCERT Solutions
  • Rulers and Buildings Question Answer Class 7 Social Science History Chapter 5 NCERT Solutions
  • On Equality Question Answer Class 7 Social Science Civics Chapter 1 NCERT Solutions
  • Role of the Government in Health Question Answer Class 7 Social Science Civics Chapter 2 NCERT Solutions
  • Vital Villages, Thriving Towns Question Answer Class 6 Social Science History Chapter 9 NCERT Solutions
  • New Empires and Kingdoms Question Answer Class 6 Social Science History Chapter 11 NCERT Solutions
  • The Delhi Sultans Question Answer Class 7 Social Science History Chapter 3 NCERT Solutions
  • The Mughal Empire Question Answer Class 7 Social Science History Chapter 4 NCERT Solutions
  • India: Climate Vegetation and Wildlife Question Answer Class 6 Social Science Geography Chapter 8 NCERT Solutions
  • Traders, Kings and Pilgrims Question Answer Class 6 Social Science History Chapter 10 NCERT Solutions
  • Environment Question Answer Class 7 Social Science Geography Chapter 1 NCERT Solutions
  • Understanding Advertising Question Answer Class 7 Social Science Civics Chapter 7 NCERT Solutions
  • The Making of Regional Cultures Question Answer Class 7 Social Science History Chapter 9 NCERT Solutions

Footer

Maths NCERT Solutions

NCERT Solutions for Class 12 Maths
NCERT Solutions for Class 11 Maths
NCERT Solutions for Class 10 Maths
NCERT Solutions for Class 9 Maths
NCERT Solutions for Class 8 Maths
NCERT Solutions for Class 7 Maths
NCERT Solutions for Class 6 Maths

SCIENCE NCERT SOLUTIONS

NCERT Solutions for Class 12 Physics
NCERT Solutions for Class 12 Chemistry
NCERT Solutions for Class 11 Physics
NCERT Solutions for Class 11 Chemistry
NCERT Solutions for Class 10 Science
NCERT Solutions for Class 9 Science
NCERT Solutions for Class 7 Science
MCQ Questions NCERT Solutions
CBSE Sample Papers
NCERT Exemplar Solutions LCM and GCF Calculator
TS Grewal Accountancy Class 12 Solutions
TS Grewal Accountancy Class 11 Solutions