Chapter: 3rd Maths : Term 3 Unit 1 : Geometry
Properties of 3D Objects

Properties of 3D Objects

1. Pick out the shapes with (i) curved surfaces (ii) flat surfaces (iii) curved and flat surfaces from the given picture and completed table.

Classroom with various objects

i. curved surface

Clock

Earth Globe

Notice board

ii. flat surface

Blackboard

Table

Desk

Chair, Duster

iii. curved and flat surface

Water bottle

Trophy, Chalk,

Flower pot

2. Complete the table by counting the sides, corners and diagonals of the given 3D shapes.

Table of properties for 3D shapes: Cube, Cuboid, Sphere, Cylinder, Cone

3. Follow the given steps and draw the 3−D objects.

(i) Cube

Steps to draw a cube

(ii) Cuboid

Steps to draw a cuboid

(iii) Cylinder

Steps to draw a cylinder

(iv) Cone

Steps to draw a cone

(v) Sphere

Steps to draw a sphere