Page 131 - Math Genius C3

E:\Working\Orange_Education\Math_Genius_3\Open_Files\CHAP_07
\ 01-Oct-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

sphere hemisphere

 It does not have an edge or vertex.  When a sphere is cut into halves, each part
is a hemisphere.
 It has a curved face.  It has two faces (one plane Edge Plane face

Example: Football and the other curved).

 It has one curved edge. Curved face
Example: Bowl

difference between a cube and a cuboid

 In a cuboid, the opposite rectangular faces have the same shape and size, whereas

in a cube, all the square faces have the same shape and size.

 In a cube, all the edges are equal, whereas in a cuboid, the opposite edges are equal.

Fast Check Logical Thinking
Identify the solid shapes in each of the following objects:

1. 2. 3. 4.

_______________ _______________ _______________ _______________

Views

When an object is viewed from different positions, it may look different.

Here are the different views of a table and a water bottle.

Logical Thinking
Front view Side view Top view activity
Draw the top, front
and side views of the
object given here.

Front view Side view Top view

Teacher’s Tell the students about the difference between 2D and 3D shapes using real-life 2D or 3D objects.
Tip

Mathematics-3 129