In general, an imaginary line is usually any sort of geometric line (more generally, curves) that has only an abstract definition and does not physically exist. They are often used to properly identify places on a map.

Time zone borders are imaginary lines

Some outside geography do exist. A centerline is a nautical term for a line down the center of a vessel lengthwise.

Examples

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Geography

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As a geographical concept, an imaginary line may serve as an arbitrary division, such as

Science and engineering

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See also

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References

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  1. ^ Rosenberg, Matt (January 26, 2020). "Major Lines of Latitude and Longitude on a World Map".
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