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Question
Have you ever seen a windmill? What is it used for?
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Solution
Yes, I have seen a windmill.
The windmill is used for grinding corn, pumping water. It is also used for generating electricity.
RELATED QUESTIONS
Complete the following table:
| Point | Reflection in | ||
| x-axis | y-axis | origin | |
| (i) (8, 2) | |||
| (ii) (5, 6) | |||
| (iii) (4, −5) | |||
| (iv) (6, −2) | |||
| (v) (−3, 7) | |||
| (vi) (−4, 5) | |||
| (vii) (−2, −7) | |||
| (viii) (−6, −3) | |||
| (ix) (4, 0) | |||
| (x) (−7, 0) | |||
| (xi) (0, −6) | |||
| (xii) (0, 7) | |||
| (xiii) (0, 0) | |||
Each of the points A (0, 4), B (0, 10), C (0, – 4), D (0, – 6) and E (0, 0) is reflected in y-axis to points A’, B’, C’, D’ and E’ respectively. Write the co-ordinates of each of the image points A’, B’, C’, D’ and E’.
Examine the following figure carefully, draw line(s) of symmetry in whichever figure possible:
Draw the line(s) of symmetry for the figure drawn below:
In the following case, construct a point that is symmetric to the given point P with respect to the given line AB.
Draw all the possible lines of symmetry for the given figure below:
Draw all the possible lines of symmetry for the given figure below:
The three digit number 101 has rotational and reflection symmetry. Give five more examples of three digit numbers which have both rotational and reflection symmetry
Copy the following drawing on squared paper. Complete such that the resulting figure has two dotted lines as two lines of symmetry.
How did you go about completing the picture?
In each figure alongside, a letter of the alphabet is shown along with a vertical line. Take the mirror image of the letter in the given line. Find which letters look the same after reflection (i.e. which letters look the same in the image) and which do not. Can you guess why?
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