The number of lines of symmetry in a ruler is:
0
1
2
4
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A ruler has 2 lines of symmetry — one along its length (horizontal axis) and one along its width (vertical axis).
Hence, option 3 is the correct option.
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The number of lines of symmetry in a picture of a divider is:
The number of lines of symmetry in a picture of a compass is:
none of these
The number of lines of symmetry in a 30° - 60° - 90° set square is:
3
The number of lines of symmetry in a protractor is:
more than 2