Angle

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* '''Azimuth''' or '''direction angle''' <br> Angle that is constructed by a distance and a defined direction (in geodesy mostly a [[north]] direction)
 
* '''Azimuth''' or '''direction angle''' <br> Angle that is constructed by a distance and a defined direction (in geodesy mostly a [[north]] direction)
 
* '''Angle of refraction''' <br> Angle constructed by two distances
 
* '''Angle of refraction''' <br> Angle constructed by two distances
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Note that angles are always read in clockwise direction- direction angles based on the north direction, angles of refraction from the preceding to the following reference point.
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<gallery heights="250px" widths="350px">
 
<gallery heights="250px" widths="350px">
 
image:elev_angle.jpg|Elevation angle (with Zenith-, Nadir- and angle of inclination)
 
image:elev_angle.jpg|Elevation angle (with Zenith-, Nadir- and angle of inclination)

Revision as of 18:21, 15 May 2011

In mensuration, three angles are important[1]:

  • Elevation angle
    Specifying the elevation of a distance
  • Azimuth or direction angle
    Angle that is constructed by a distance and a defined direction (in geodesy mostly a north direction)
  • Angle of refraction
    Angle constructed by two distances

Note that angles are always read in clockwise direction- direction angles based on the north direction, angles of refraction from the preceding to the following reference point.

References

  1. Kleinn, Dr. C. Skriptum zur Vorlesung „Einführung in die Vermessungslehre“ für Studierende der Forstwissenschaften. Georg August Universität Göttingen, 2009.
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