What is a datum in surveying?

An arbitrary starting reference point.

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  1. A measurement of wind speed
  2. An arbitrary starting reference point ✔
  3. A type of survey marker paint

Why: A datum is an arbitrary reference point from which a coordinate system measures positions.

Huh, didn't know that: A datum is an arbitrary reference point from which a coordinate system measures positions.

The dad joke
A datum is the data's starting line.
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References

Answer: An arbitrary starting reference point. A datum is an arbitrary reference point from which a coordinate system measures positions.

  1. Surveying en.wikipedia.org/wiki/Surveying
    The simplest coordinate systems assume that the Earth is flat and measure from an arbitrary point, known as a 'datum'
    Checked 2026-11-07.

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