NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes

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NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.1

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Exercise 15.1

Ex 15.1 Class 7 Maths Question 1.
Identify the nets which can be used to make cubes (Cut out copies of the nets and try it):
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 1
Solution:
Fig. (ii), (iii), (iv) and (vi) can be used to make cubes.

Ex 15.1 Class 7 Maths Question 2.
Dice are cubes with dots on each face. Opposite faces of a die always have a total of seven dots on them.
Here are two nets to make dice (cubes); the number inserted in each square indicate the number of dots in that box.
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 2
Insert suitable number in the blanks, remembering that the number on the opposite faces should total to 7.
Solution:

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 3

Ex 15.1 Class 7 Maths Question 3.
Can this be a net for a die? Explain your answer.
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 4
Solution:
If one pair of opposite faces will have 1 and 4 on them, then their total does not come 7.
If we take 3 and 6 on the opposite faces of the die, then the total does not come 7.
Hence, this cannot be for a die.

Ex 15.1 Class 7 Maths Question 4.
Here is an incomplete net for making a cube. Complete it in atleast two different ways. Remember that a cube has six faces. How many are there in the net here? (Give two separate diagrams. If you like, you may use a squared sheet for easy manipulation).
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 5
Solution:
There are three faces in the given net.
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 6

Ex 15.1 Class 7 Maths Question 5.
Match the nets with appropriate solids:
NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes 7
Solution:
(a) (ii)
(b) (iii)
(c) (iv)
(d) (i)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.1 Q1

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.1 Q2

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.1 Q3

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.1 Q4

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes Ex 15.1 Q5

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