CLASS 7 MATH NCERT SOLUTIONS FOR CHAPTER – 15 VISUALIZING SOLID SHAPES EX – 15.2

Visualizing Solid Shapes

1. Use isometric dot paper and make an isometric sketch for each one of the given shapes:

(i)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 30

Solution:-

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 31

(ii)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 32

Solution:-

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 33

(iii)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 34

Solution:-

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 35

(iv)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 36

Solution:-

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 37

2. The dimensions of a cuboid are 5 cm, 3 cm and 2 cm. Draw three different isometric sketches of this cuboid.

Solution:-

From the question it is given that dimension of a cuboid are 5 cm, 3 cm, and 2 cm.

The three different isometric sketches of this cuboid is shown below,

1

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 38

2

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 39

3

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 40

3. Three cubes each with 2 cm edge are placed side by side to form a cuboid. Sketch an oblique or isometric sketch of this cuboid.

Solution:-

Oblique sketch

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 41

Isometric sketch

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 42

4. Make an oblique sketch for each one of the given isometric shapes:

(i)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 43

Solution:-

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 44

(ii)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 45

Solution:-

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 46

5. Give (i) an oblique sketch and (ii) an isometric sketch for each of the following:

(a) A cuboid of dimensions 5 cm, 3 cm and 2 cm. (Is your sketch unique?)

(b) A cube with an edge 4 cm long.

Solution:-

(a)

(i) Oblique sketch

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 47

(ii) Isometric sketch

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 48

(b)

(i) Oblique sketch

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 49

(ii) Isometric sketch

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Image 50

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