**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):**

Solution:

Fig. (ii), (iii), (iv) and (vi) can be used to make cubes.

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.**

Insert suitable number in the blanks, remembering that the number on the opposite faces should total to 7.

Solution:

Insert suitable number in the blanks, remembering that the number on the opposite faces should total to 7.

Solution:

**Ex 15.1 Class 7 Maths **

**Question 3.
Can this be a net for a die? Explain your answer.**

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.

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).**

Solution:

There are three faces in the given net.

Solution:

There are three faces in the given net.

**Ex 15.1 Class 7 Maths **

**Question 5.
Match the nets with appropriate solids:**

Solution:

(a) (ii)

(b) (iii)

(c) (iv)

(d) (i)

Solution:

(a) (ii)

(b) (iii)

(c) (iv)

(d) (i)

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