Surveying
In the quadrantal bearing system, a whole circle bearing of 293° 30′ can be expressed as

W23°30’N
N23°30’W
S113°30’N
N66°30’W

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Surveying
In triangulation surveys

Sides are not measured excepting the base line
Control stations are located from which detailed surveys are carried out
All listed here
The area is divided into triangular figures

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