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NCERT & CBSE Class 3 Maths 3D Shapes

NCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, cone

NCERT & CBSE Class 3 Maths 3D Shapes

3D shapes is one of the most important and new topic in CBSE class 3 Maths‘. 3D shapes are introduced in Class 3. And according to CBSE Class 3 Exam Pattern many short questions may be come from it.

Classify 3 – D Shapes

  • A 2-D shape lies flat. Square, Circle, rectangle and triangle are all 2-D shapes.
  • The sides of a 3-D shape are something that you can hold and use to store things.
  • Cones, cubes, cuboids, cylinders and spheres are some examples of 3-D shapes.
  • 3-D shapes can be grouped according to their shapes or properties.
  • Some have flat edges called faces, which help them slide.
  • Some have curved faces which help them roll.
  • Some have edges where 2 sides meet. Some have corners where the edges meet.

Example

CBSE Class 3 Maths 3D Shapes
NCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, cone

Properties of 3-D Shapes

3-D shapes have features like faces (flat or curved), edges (straight or curved) and corners (vertices). These features are the properties of a 3D shape.

A property is something that a 3-D shape always has. For example, a sphere is always round; so this is a property of a sphere

Explanation

CBSE Class 3 Maths 3D Shapes
NCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, cone

Comparing Properties

The number of faces, edges and corners are properties of some shapes that help compare these shapes. Sometimes, two shapes have the same number of sides, edges and corners but they look different.

Look at these two shapes. They look different, but they have the same number of faces, edges and corners.

NCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, cone

A cube has all square faces, but a cuboid has rectangular faces and the opposite faces are equal.

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NCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, cone NCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, cone NCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, cone NCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, coneNCERT & CBSE Class 3 Maths 3D Shapes - Cube, cuboid, cone

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May 25, 2017

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