Surveying
The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between

Equator and zenith
Zenith and pole
Horizon and equator
Pole and horizon

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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 usually denoted by the Greek letter ?
All listed here
Is the point in the celestial sphere where zero meridian crosses the celestial equator

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