Class 6 • Mathematics • Chapter 13
Symmetry
Explore symmetry, lines of symmetry and mirror images. Learn to recognise balanced patterns in geometrical figures and everyday objects.
Learn the Basics
Important Concepts
Understand symmetry step by step.
Symmetry
Understand symmetry as a balanced arrangement in which one part corresponds to another.
Line of Symmetry
Learn how a line can divide a figure into two matching halves.
Symmetrical Figures
Identify figures that have one or more lines of symmetry.
Mirror Images
Understand how reflection creates a mirror image of an object or figure.
Number of Lines of Symmetry
Find and count the lines of symmetry in common geometrical figures.
Symmetry in Everyday Objects
Recognise symmetry in letters, shapes, patterns and objects around us.
Understand with Examples
Symmetry Examples
Square
A square has 4 lines of symmetry.
Rectangle
A rectangle has 2 lines of symmetry.
Equilateral Triangle
An equilateral triangle has 3 lines of symmetry.
Visual Learning
Line of Symmetry
A line of symmetry divides a figure into two matching halves. If the figure is folded along this line, the two halves coincide.
Everyday Mathematics
Symmetry Around Us
🦋 Butterfly
Shows a balanced pattern.
❤️ Heart
Shows a balanced pattern.
🏛️ Building
Shows a balanced pattern.
🌸 Flower
Shows a balanced pattern.
Quick Notes
Remember These Points
- • A symmetrical figure has matching parts on either side of a line of symmetry.
- • A line of symmetry divides a figure into two matching halves.
- • A square has 4 lines of symmetry.
- • A rectangle has 2 lines of symmetry.
- • An equilateral triangle has 3 lines of symmetry.
Practice
Practice Questions
What is meant by symmetry?
Draw a line of symmetry for a square.
How many lines of symmetry does a rectangle have?
How many lines of symmetry does an equilateral triangle have?
Identify whether the letter A has a line of symmetry.
Give two examples of symmetrical objects from everyday life.
Test Yourself
Revise symmetry, mirror images and lines of symmetry before taking the quiz.