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A protractor has line/lines of symmetry...

A protractor has __________ line/lines of symmetry.

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NCERT EXEMPLAR-SYMMETRY AND PRACTICAL GEOMETRY -Exercise (In questions 18 to 42, fill in the blanks to make the statements true.)
  1. If an angle of measure 80^(@) is reflected in a line of symmetry, then...

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  2. The image of a point lying on a line l with respect to the line of sym...

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  3. If B is the image of the point A with respect to the line l and P is a...

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  4. The number of lines of symmetry in Fig. 9.11 is.

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  5. The common properties in the two set-squares of a geometry box are tha...

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  6. The digits having only two lines of symmetry are and .

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  7. The digit having only one line of symmetry is .

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  8. The number of digits having no line of symmetry is.

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  9. The number of capital letters of the English alphabets having only ver...

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  10. The number of capital letters of the English alphabets having only hor...

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  11. The number of capital letters of the English alphabets having both hor...

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  12. The number of capital letters of the English alphabets having no line ...

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  13. The line of symmetry of a line segment is the bisector of the line se...

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  14. The number of lines of symmetry in a regular hexagon is .

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  15. The number of lines of symmetry in a regular polygon of n sides is.

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  16. A protractor has line/lines of symmetry.

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  17. A 30^(@) - 60^(@) - 90^(@) set - square has line / lines of symmetry

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  18. A 45^(@) - 45^(@) - 90^(@) set - square has line / lines of symmetry

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  19. A rhombus is symmetrical about

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  20. A rectangle is symmetrical about the lines joining the of the opposi...

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