Page 214 - ICSE Math 7

4. 0 3 2

Cylinder

5. 0 1 0

Sphere

6. 6 5 9

Triangular prism

7. 5 5 8

Square pyramid

8. 4 4 6

Triangular pyramid

EXERCISE 19.1

1. Give two examples of objects having shape similar to a:
(a) cylinder (b) cone (c) cube (d) sphere
2. Match the following.
(a) An unsharpened pencil (i) sphere
(b) A table tennis ball (ii) cuboid
(c) A match box (iii) cone
(d) A die (iv) cube
(e) A clown’s cap (v) cylinder
3. Complete the following table and verify Euler’s formula in each case.

Faces (F) 6

Edges (E) 9
Vertices (V)
F + V – E 2

200