NCERT Solutions: Does It Look the Same?

1. Find out which letters in the English alphabet looks the same after half a turn.

Ans. The letters in English alphabet which look the same after a turn are H, I, N, O, S, X and Z. 

2. Which of these English words reads the same on half a turn?

ZOOM, MOW, SWIMS, SIS, NOON

Ans. The English words MOW, SWIMS, SIS AND NOON read the same on half a turn.

3. Give half a turn to the numbers from 0 to 9. Find which of them still look the same.

Ans. The numbers 0, 1 and 8 look the same after giving a turn to them.

4. Think of all 2, 3 and 4 digit numbers which look the same on half a turn.

Ans. All 2, 3 and 4 digit numbers which look the same on half a turn are:

2-digit numbers: 11, 88

3-digit numbers: 101, 111, 181, 808, 818, 888

4-digit numbers: 1001, 1111, 1881, 8008, 8118, 8888

5. Which among the following pictures will look the same on half a turn?

Ans. The following pictures will look the same on half a turn.

6. Have you ever seen a windmill? What is it used for?

Ans. Yes, I have seen a windmill. It is a mill turned by the wind. In it the wind turns a set of vanes mounted on a horizontal shaft, the rotation of which transmitted by gearing to working machinery. It is used for grinding corn, pumping water, street light and powering light industry.

7.  Does you windmill look the same on  of a turn?

Ans. Yes, the windmill look the same on of a turn.

8. Does it look the same on half a turn? Discuss.

Ans. Since of a turn +of a turn means half of a turn. So it looks the same on half a turn also.

9. Does the fan look the same on turn?

Ans. Yes, the fan looks the same on turn.

10. Draw what the following shapes would look like on   turn and half a turn.

Which of the above shapes do not look the same on    turn? Which shapes do not look the same on   1/2   a turn?

Ans. 

Shapes (a), (c) and (d) do not look the same on turn. Shape (a) does not look the same on  a turn.

11. Which fan will look the same on a  turn?

Ans. Fan (a) will look the same on a turn.

 This is because all the blades are of the same color in fan (a).

12. Look at the following shapes. Draw how they will look on  and   turn.

Ans. The required shapes are drawn as under:

13. Look at the following shapes —

a) Find out which of these figures look the same on      turn. Mark them with . 

b) Which are the ones that will not look the same after    turn? Mark them with   .

c) Try and change the shapes below in such a way that they look the same on   turn.

(c)Given shapes are changed as under so that the may look the same on  turn.

14.  Draw some shapes which will look the same after  turn.

Ans.  The following shapes will look the same after turn.

15. Draw some shapes which will look the same after  turn.

Ans. The following shapes will look the same after turn.