Maths

Shapes (2D and 3D)

Class 2

🎯 Learning Objectives

Name and describe 2D shapes: circle, square, triangle, rectangle, and oval.
Name and describe 3D shapes: sphere, cube, cone, cylinder, and cuboid.
Count the sides and corners of 2D shapes.
Identify faces, edges, and corners of 3D shapes.
Find shapes in everyday objects around us.
Understand the difference between 2D and 3D shapes.

📖 Let Us Begin!

Look around you! The wheel of a bicycle is round like a circle. A book looks like a rectangle. A birthday cap is like a cone. A cricket ball is like a sphere. Shapes are everywhere! We see flat shapes (called 2D shapes) and solid shapes (called 3D shapes) all around us. Let us learn about them.

2D and 3D shapes with real-life examples

2D Shapes (Flat Shapes)

2D shapes are flat. You can draw them on paper. They have sides (straight lines) and corners (where two sides meet).

Shape	Sides	Corners	Special Feature	Examples in Life
Circle	0 (curved)	0	Perfectly round	Coin, bangle, wheel, roti
Square	4 (all equal)	4	All sides same length	Handkerchief, tile, carrom board
Triangle	3	3	Fewest sides possible	Samosa, tent, traffic sign
Rectangle	4 (2 long, 2 short)	4	Opposite sides equal	Book, door, window, TV screen
Oval	0 (curved)	0	Like a stretched circle	Egg, mirror, cricket ground

A square is a special rectangle where all 4 sides are equal!

3D Shapes (Solid Shapes)

3D shapes are solid. You can hold them in your hands. They have faces (flat surfaces), edges (where two faces meet), and corners/vertices (pointed tips).

Shape	Faces	Edges	Corners	Examples in Life
Sphere (Ball)	1 curved	0	0	Cricket ball, orange, marble, globe
Cube	6 (all square)	12	8	Dice, Rubik's cube, ice cube, sugar cube
Cuboid (Box)	6 (rectangles)	12	8	Brick, book, matchbox, tiffin box
Cone	1 flat + 1 curved	1	1 (tip)	Ice cream cone, birthday cap, funnel
Cylinder	2 flat + 1 curved	2	0	Tin can, drum, glass, pipe

A sphere can roll in any direction. A cylinder can roll only forward and backward. A cube cannot roll at all!

Difference Between 2D and 3D Shapes

2D Shapes (Flat)	3D Shapes (Solid)
Can be drawn on paper	Can be held in hands
Have length and width only	Have length, width, and height
Have sides and corners	Have faces, edges, and corners
Examples: circle, square, triangle	Examples: sphere, cube, cone

📝 Key Words

Word	Meaning
2D shape	A flat shape with length and width (can be drawn on paper)
3D shape	A solid shape with length, width, and height (can be held)
Side	A straight line that forms part of a flat shape
Corner (Vertex)	The point where two sides or edges meet
Face	A flat surface of a 3D shape
Edge	The line where two faces of a 3D shape meet

⭐ Key Points to Remember

A circle and oval have no sides or corners — they are curved.
A square has 4 equal sides and 4 corners.
A triangle has 3 sides and 3 corners (fewest sides of any shape).
A rectangle has 4 sides and 4 corners (opposite sides are equal).
3D shapes have faces, edges, and corners.
A sphere has no edges or corners — it is perfectly round.
A cube has 6 faces, 12 edges, and 8 corners.

Finished learning? Now test what you know!

🎯 Quick Quiz — Test Yourself!

Answer these questions right here. You get instant feedback — no paper needed!

Score: 0 / 8

1. How many sides does a triangle have?

A triangle has 3 sides and 3 corners.

2. How many sides does a square have?

A square has 4 equal sides.

3. Which shape is perfectly round with no corners?

A circle is round and has no sides or corners.

4. A shape with 4 sides, where opposite sides are equal (like a door), is a:

A rectangle has 4 sides with opposite sides equal.

5. How many corners does a square have?

A square has 4 corners.

6. What shape is a wheel or a coin?

A wheel and a coin are circle-shaped.

7. Which shape has 3 sides and 3 corners?

A triangle has 3 sides and 3 corners.

8. How many corners does a circle have?

A circle has 0 corners — it is perfectly round.

✏️ Practice Questions

A. Fill in the Blanks (10)

1. A triangle has sides and corners.

2. A has 4 equal sides.

3. An ice cream cone is shaped like a .

4. A circle has corners.

5. A cricket ball is shaped like a .

6. A cube has faces.

7. A rectangle has sides and corners.

8. A shape can be drawn on paper (2D / 3D).

9. A cylinder has flat faces and curved face.

10. A matchbox is shaped like a .

B. Choose the Correct Answer (MCQ - 5)

1. How many sides does a rectangle have?

a) 3b) 4c) 5

2. Which shape looks like a tin can?

a) Cubeb) Conec) Cylinder

3. Which shape has no sides or corners?

a) Squareb) Circlec) Triangle

4. How many corners does a cube have?

a) 4b) 6c) 8

5. Which 3D shape can roll in any direction?

a) Cubeb) Spherec) Cylinder

C. Short Answer (5)

1. Name two things in your classroom that are shaped like a rectangle.

2. What is the difference between a square and a rectangle?

3. Name one 3D shape and one thing in your home that looks like it.

4. What is the difference between a 2D shape and a 3D shape?

5. Name two objects shaped like a cylinder.

D. True or False (5)

1. A square has 4 equal sides.

2. A sphere has 6 faces.

3. A triangle has 4 corners.

4. A cylinder can roll.

5. An oval is a 3D shape.

E. Match the Following (5)

Shape	Real-life Object
1. Sphere	a) Dice
2. Cube	b) Drum
3. Cone	c) Cricket ball
4. Cylinder	d) Birthday cap
5. Cuboid	e) Brick

🎨 Activity: Shape Hunt at Home

Walk around your home and find one object for each shape: circle, square, triangle, rectangle, sphere, cube, cone, cylinder. Draw and label each one in your notebook. Which shape did you find the most?

Want to review the lesson again?

Mathematics

Shapes (2D and 3D)

Class 2 | CBSE / NCERT / ICSE

Name: Class: Date:

Learning Objectives

Name and describe 2D shapes: circle, square, triangle, rectangle, oval.
Name and describe 3D shapes: sphere, cube, cone, cylinder, cuboid.
Count sides, corners, faces, and edges.
Find shapes in everyday objects.

Let Us Begin!

Look around you! The wheel of a bicycle is a circle. A book is a rectangle. A birthday cap is a cone. A cricket ball is a sphere. Shapes are everywhere! We see flat shapes (2D) and solid shapes (3D) all around us.