Page 147 - Math Genius C2

E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_08
\ 26-Sep-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

Sphere: The figure given below is a sphere. Some spherical objects are

• A sphere has one curved shown below.

face.
• It does not have any edge

or vertex.

activity
touch and tell. Who am I? Experiential Learning

Place different wooden solid shapes or objects with variations in
faces, corners and edges. Blindfold a child and ask them to pick an
object as per the details given by other children.
For example, a student may be asked to find an object with one
vertex.

Similarly, continue with other objects and other students.

Think Tank Logical Thinking

Name objects which have:
1. no vertices 2. 1 vertex 3. 2 edges 4. 6 faces

Practice time 8c

1. Look at your surroundings and name:

(a) one cubical object. _______ (b) one spherical object. _______

(c) one cylindrical object. _______ (d) one cuboidal object. _______

2. How many faces, vertices and edges do these solid shapes have?

Solid shape Cube Cuboid Cone Cylinder Sphere

Faces

Vertices

edges

Mathematics-2 145