Surveying
The angle between the direction of star and the direction of earth's axis of rotation is called

Latitude
Declination
Co-declination
Co-latitude

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Surveying
The First Point of Aeries

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

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