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प्रश्न
Have you ever seen a windmill? What is it used for?
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उत्तर
Yes, I have seen a windmill.
The windmill is used for grinding corn, pumping water. It is also used for generating electricity.
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संबंधित प्रश्न
Each of the points A (0, 7), B (8, 0), C (0, − 5), D (− 7, 0) and E (0, 0) are reflected in origin 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’.
Mark points A (4, 5) and B (− 5, 4) on a graph paper. Find A’, the image of A in x-axis and B’, the image of B in x-axis.
Mark A’ and B’ also on the same graph paper. Join AB and A’ B’ and find if AB = A’ B’?
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Find the number of lines of symmetry in the following shapes. How will you check your answers?

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?

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