Q.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 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 7.

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes

Answer :

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes

Answer :

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.

Q. 4 Here is an incomplete net for making a cube.
Complete it in at least 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

Answer :

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

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

(b) A cube with an edge 4 cm long. An isometric sheet is attached at the end of the book. You could try to make on it some cubes or cuboids of dimensions specified by your friend.

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes

Answer :

Q.1 A bulb is kept burning just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow. (You may try to experiment first and then answer these questions).

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes

Answer :

(a) circle

(b) rectangle

(c) rectangle

Q.2 Here are the shadows of some 3-D objects, when seen under the lamp of an overhead projector. Identify the solid(s) that match each shadow. (There may be multiple answers for these!)

NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes

Answer :

(i) sphare

(ii) cube

(iii) pyramid

(iv) cuboid

There are total 14 questions present in ncert solutions for class 7 maths chapter 15 visualising solid shapes

There are total 0 long question/answers in ncert solutions for class 7 maths chapter 15 visualising solid shapes

There are total 4 exercise present in ncert solutions for class 7 maths chapter 15 visualising solid shapes