NCERT Solutions for Class 4 Maths Chapter 1: Shapes Around Us – Free PDF Download

Chapter 1 of Class 4 Maths Mela, Shapes Around Us, moves beyond simply naming shapes — children explore the properties of 2D shapes (sides, corners) and 3D shapes (faces, edges, corners), different types of angles, and how flat “nets” fold up into solid shapes.

Last Updated: September 23, 2026

NCERT Solutions for Class 4 Maths Chapter 1: Shapes Around Us

What this chapter teaches.
Identifying 2D shapes (squares, rectangles, circles, triangles) and their properties; identifying faces, edges, and corners of solid (3D) shapes like cubes, cuboids, cones, and pyramids; recognising right angles, acute angles (smaller than a right angle), and obtuse angles (bigger than a right angle); and understanding a “net” — a flat shape that can be folded to form a 3D solid.

Activity 1 — Sort 2D and 3D Shapes.
Children are shown a set of shapes and sort them into flat (2D) and solid (3D) groups. Work through the actual picture in the book together, checking whether each shape has depth (3D) or is completely flat (2D).

Activity 2 — Count Faces, Edges, Corners.
For solid shapes shown in the book, children count faces (flat surfaces), edges (where two faces meet), and corners (where edges meet). Real answer for reference: a cube has 6 faces, 12 edges, and 8 corners; a cuboid also has 6 faces, 12 edges, and 8 corners; a cone has 1 flat face, 1 curved surface, 1 edge, and 1 corner (apex).

Activity 3 — Spot the Angle.
Children look at corners in pictures (a clock hand, a book corner, a slice of pizza) and identify whether the angle is right, acute, or obtuse. A right angle looks like the corner of a square page; acute angles are sharper/narrower; obtuse angles are wider/more open.

Activity 4 — Fold the Net.
Children are given a flat net (printed in the book or cut out) and predict, then check by folding, which 3D shape it makes. This is a genuinely hands-on activity — the best way to work through it is to actually cut and fold paper nets rather than guess from a picture alone.

Why This Chapter Matters

This chapter builds the vocabulary (faces, edges, corners, angles) and spatial reasoning needed for all later geometry, and nets are a first, concrete introduction to how 2D and 3D shapes relate to each other.

How to Use These Solutions

Use real household objects (a box for a cuboid, a ball for a sphere, a party hat for a cone) to practise counting faces/edges/corners, and try folding real paper nets. Download the full chapter from our Class 4 Maths NCERT book page, or browse the Class 4 hub.

More on This Chapter

See also the Extra Questions and Revision Notes for this chapter.

Frequently Asked Questions

How many faces, edges, and corners does a cube have?
6 faces, 12 edges, and 8 corners.

What are the three types of angles covered in this chapter?
Right angle, acute angle (smaller than right), and obtuse angle (bigger than right).

Written by Satish

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