NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes InText Questions

Class 7 Maths NCERT Solutions Chapter 15 Visualising Solid Shapes InText Questions

Try These (Page 277)

Question 1.
Match the shape with the name:

Solution:
After matching the shape, their corresponding names are given below :

Try These (Page 278)

Question 1.
Match the 2-dimensional figures with the names.

Solution:
After matching the two-dimensional figures, their corresponding names are given below :

Try These (Page 281)

Question 1.
Here you find four nets (see fig.). There are two correct nets among them to make a tetrahedron. See if you can work out which nets will make a tetrahedron.
(i)

(ii)

(iii)

(iv)

Solution:
In the given figure, net (i) and net (iii) are two correct nets to make a tetrahedron.

Try These (Page 286)

Question 1.
Try to guess the number of cubes in the following arrangements in the figure.
Solution:
The number of cubes in the given arrangements is as follows :
(i)

24 cubes
(ii)

8 cubes
(iii)

9 cubes

Try These (Page 287)

Question 1.
Two dice are placed side by side as shown. Can you say what the total would be on the face opposite to?

(a) 5 + 6
Solution:
Here, the face opposite to the face having 5 dots is the face having 2 dots, and the face opposite to the face having 6 dots is the face having 1 dot.
So, the total on the face opposite to 5 + 6 is 2 + 1 i.e., 3.

(b) 4 + 3
Solution:
The face opposite to the face having 4 dots is the face having 3 dots and the face opposite to the face having 3 dots is the face having 4 dots.
So, the total on the face opposite to 4 + 3 = 3 + 4 i.e., 7.

Question 2.
Three cubes each with a 2 cm edge are placed side by side to form a cuboid. Try to make an oblique sketch and stay what could be its length, breadth, and height.
Solution:
Three cubes each with a 2 cm edge are placed side by side to form a cuboid, then its oblique sketch is given:

Now, length of cuboid = 2 cm + 2 cm + 2 cm = 6 cm
Breadth of cuboid = 2 cm
Height of cuboid = 2 cm

Try These (Page 291)

Question 1.
For each solid, the three views (1), (2), (3) are given. Identify for each solid the corresponding top, front and side views.
(i)

Solution:
(1) → Front
(2) → Side
(3) → Top

(ii)

Solution:
(1) → Top
(2) → Side
(3) → Front

(iii)

Solution:
(1) → Side
(2) → Front
(3) → Top

(iv)

Solution:
(1) → Side
(2) → Top
(3) → Front

Question 2.
Draw a view of each solid as seen from the direction indicated by the below:
Solution:
The view of each solid as seen from the direction indicated by the arrow, are as follows :
(i)

Solution:

(ii)

Solution:

(iii)

Solution: