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Which of the following letters has rotat...

Which of the following letters has rotational symmetry of order more than 1 but not any line of symmetry?

A

X

B

S

C

B

D

T

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The correct Answer is:
To solve the question of which letter has rotational symmetry of order more than 1 but does not have any line of symmetry, we can follow these steps: ### Step 1: Understand the Concepts - **Rotational Symmetry**: A shape has rotational symmetry if it can be rotated (less than a full turn) and still look the same. The order of rotational symmetry is the number of times a shape fits onto itself during a full rotation (360 degrees). - **Line of Symmetry**: A shape has a line of symmetry if it can be divided into two identical halves that are mirror images of each other. ### Step 2: Analyze Each Letter 1. **Letter X**: - Has two lines of symmetry (vertical and horizontal). - **Conclusion**: Not our answer. 2. **Letter S**: - Does not have any line of symmetry. - When rotated 180 degrees, it looks the same. - **Conclusion**: Has rotational symmetry of order 2. 3. **Letter B**: - Has a vertical line of symmetry. - **Conclusion**: Not our answer. 4. **Letter T**: - Has a vertical line of symmetry. - **Conclusion**: Not our answer. 5. **Other Letters (A, C, D)**: - All have at least one line of symmetry. - **Conclusion**: Not our answer. ### Step 3: Identify the Correct Answer - The only letter that has rotational symmetry of order more than 1 (specifically order 2) and does not have any line of symmetry is **S**. ### Final Answer: The letter **S** has rotational symmetry of order more than 1 but does not have any line of symmetry. ---
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MTG IIT JEE FOUNDATION-SYMMETRY-Exercise (Multiple Choice Questions)
  1. Which of the following has no line of symmetry?

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  2. The figure which has two lines of symmetry and rotational symmetry of ...

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  3. The order of rotational symmetry of a circle is

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  4. The least angle of rotation of a regular pentagon

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  5. The order of rotational symmetry of regular octagon is

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  6. Which squares should be shaded to make the given figure symmetric?

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  7. Which of the following does not have a line of symmetry?

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  8. What is the least number of squares that must be added so that the lin...

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  9. What is the least number of squares that must be added so that the lin...

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  10. What is the least number of squares that must be added so that the lin...

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  11. Which of the following have both line symmetry and rotational symmetry...

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  12. Which of the following is incorrect?

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  13. Angle of rotation of an equilateral triangle is

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  14. Order of rotation of a regular pentagon is

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  15. Which of the following letters does not have reflection symmetry about...

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  16. Which of the following figures has 45^@ as angle of rotation?

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  17. The order of rotation of given figure is

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  18. Which of the following letters has rotational symmetry of order more t...

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  19. A figure has angle of rotation of 30^@. Its order of rotation is

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  20. A figure has a rotational symmetry of order more than 1, the angle of ...

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