Surveying
At the first point of Aeries, the sun moves

From south to north of the equator
Southward
From north to south of the equator
Northward

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Surveying
Systematic errors

Are also known as cumulative errors
Always follow some definite mathematical law
Can be removed by applying corrections to the observed values
All listed here

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Surveying
For mapping any country

Geodetic triangulation of greatest possible sides and accuracy is carried out
Primary triangles are broken down into secondary triangles of somewhat lesser accuracy
All listed here
Secondary triangles are further broken into third and fourth order triangles, the points of which are used for detail surveys

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