We see shapes all around us — in toys, food, buildings, and nature. Learning shapes helps us describe and understand the world.
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Key Concepts
- Flat shapes (2D): These are shapes you can draw on paper. They have length and width but no thickness.
- Circle: perfectly round, no corners, no straight sides. Example: a bangle, a coin.
- Square: 4 equal sides, 4 corners. Example: a handkerchief, a tile.
- Rectangle: 4 sides, 4 corners; opposite sides are equal. Example: a book, a door.
- Triangle: 3 sides, 3 corners. Example: a slice of pizza, a tent.
- Solid shapes (3D): These are shapes you can hold. They have length, width, and height.
- Sphere: round like a ball — rolls easily. Example: football, orange.
- Cube: 6 equal square faces. Example: a dice, a sugar cube.
- Cuboid: 6 rectangular faces. Example: a brick, a matchbox.
- Cylinder: round ends, rolls on its side. Example: a tin can, a drum.
- Cone: round base, pointed top. Example: an ice-cream cone, a birthday cap.
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Example 1
A ball is a sphere. It is round and rolls in all directions.
Example 2
A brick is a cuboid. It has 6 faces — the top, bottom, and 4 sides.
Example 3
A coin is a circle (flat). It is round with no corners.
Example 4
A slice of watermelon is shaped like a triangle. It has 3 sides and 3 corners.
Example 5
A tin of biscuits is a cylinder. Its top and bottom are circles and it rolls on its side.
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Common mistakes
- A circle is flat; a sphere is round and solid — they are different!
- A square is a special rectangle where all 4 sides are equal.
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Summary
Shapes can be flat (2D) like circles and squares, or solid (3D) like spheres and cubes. We recognise them by their sides, corners, and whether they roll or stack.