NCERT Class 7 Mathematics Solutions: Chapter 15 –Visualising Solid Shapes Exercise 15.1 Part 1

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Understanding of visualizing solid shapes

Understanding of Visualizing Solid Shapes

Understanding of visualizing solid shapes

1. Identify the nets which can be used to make cubes (cut out copies of the nets and try it):

In Given Figure the Net Which Can Use to Make Cubes

In given figure the net which can use to make cubes

Answer:

Cube’s nets (ii), (iii), (iv) and (vi) can be used to make cubes.

2. Dice are cubes with dots on each face. Opposite faces of a die always have a total of seven dots on them.

Dices are cubes with dots

Dices Are Cubes with Dots

Dices are cubes with dots

Here are two nets to make dice (cubes); the numbers inserted in each square indicate the number of dots in that box.

In Figure, Two Nets to Make Dice (Cubes)

In figure, two nets to make dice (cubes); the numbers inserted in each square indicate the number of dots in that box

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

Answer:

In Figure, Insert Suitable Number in the Blank

In figure, insert suitable number in the blank

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

In Figure, Given Number with Box

In figure, given number with box

Answer:

No, this cannot be a net for a die.

Because one pair of opposite faces will have and on them and another pair of opposite faces will have and on them whose total is not equal to .