Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

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Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

Unit 14 Worksheet 8 || Mensuration

1. How many faces do the following polyhedrons have?

(i) Triangular prism (ii) Rectangular pyramid (iii) Triangular pyramid

Answer 1:

Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

2. How many vertices and edges do the following polyhedrons have?

(i) Square pyramid (ii) Triangular prism

Answer 2.

Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

3. Is a Square prism same as a cube? Explain

Answer 3:

Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

4. Verify Euler’s formula for the given figures.

Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

Answer 4:

Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics
Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics
Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

5. Using Euler’s formula, find the unknown.

Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

Answer 5:

Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

6. Can a polyhedron have 10 faces, 20 edges and 15 vertices?

Answer 6:

Chapter 14 | Mensuration | Class-8 DAV Secondary Mathematics

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