NCERT Revision Notes for Class 3 Maths Chapter 5: Fun with Shapes – Free PDF Download

A quick summary of Class 3 Maths Chapter 5 — symmetry, the fold test, and finding lines of symmetry.

Last Updated: September 10, 2026

Class 3 Maths Chapter 5 Revision Notes: Fun with Shapes

Chapter type: Geometry — symmetry and lines of symmetry.

Key ideas to remember:

Symmetric shape xe2x80x94 a shape that can be folded along a line so both halves match exactly.

Line of symmetry xe2x80x94 the line along which a symmetric shape is folded to get two matching halves.

Fold test xe2x80x94 physically or mentally folding a shape to check if both halves match, to test for symmetry.

What you should be able to do after this chapter:

1. Test whether a given shape is symmetric using the fold test.
2. Draw or identify the line of symmetry in a symmetric shape.
3. Complete the missing half of a symmetric picture.

Remember: Not every shape has a line of symmetry, and some shapes have more than one — a square, for example, has four different lines of symmetry, while a scalene triangle usually has none.

Frequently Asked Questions

Can a shape have more than one line of symmetry?
Yes — for example, a square has 4 lines of symmetry, and a circle has infinitely many.

How does this chapter connect to others?
It builds on the 2D shape knowledge from Class 2’s Shadow Story, and symmetry ideas return in more detail in later classes’ geometry chapters.

Written by Satish

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