Surveying
A Nautical mile is

One minute arc of the longitude
One minute arc of the great circle passing through two points
1855.109 m
All of these

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Surveying
The First Point of Aeries

Is located near the very conspicuous rectangle of stars in the constellations of Pegasus and Andromeda
Is the point in the celestial sphere where zero meridian crosses the celestial equator
Is usually denoted by the Greek letter ?
All listed here

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