Concetti Chiave
- Polygonals are sequences of segments on a surface that form closed or open figures.
- Typically, polygonals have up to ten sides to minimize errors, with side lengths between 50-70 meters and 250-300 meters.
- Vertex angles are calculated using Bessel’s rule, while side lengths are averaged from in-out readings.
- Closed polygonals have matching first and last points; open polygonals do not.
- Oriented polygonals connect to known points for projects like cadaster and roads; non-oriented are used for land area calculations.
Polygonals are a series of sides that can generate a closed or open figure. So, they are a sequence of segments drawn on the reference surface.
Characteristics of polygons
Normally, polygonals haven’t got more than ten sides to not increase the errors; the length of each side must not be greater than 250 - 300 meters and less than 50 - 70 meters.
Each vertex angle of the polygonal is calculated with Bessel’s rule while the extent of each side is obtained from the arithmetic mean between the reading-in and reading-out.
There are various types of - closed polygonals: the first point of the polygonal coincides with the last;
- open polygonals: the first point of the polygonal doesn’t coincide with the last;
- oriented polygonals: they are connected to known reference points; these types of polygonal are frequently used for cadaster and road projects;
- non-oriented polygonals: they are primarily used for the relief of land to calculate the area, because it isn’t necessary to direct the polygonal. Solving a polygonal means to compensate the measure of angles and sides and finally to find the total coordinates of all vertex.
Domande da interrogazione
- What are the typical size constraints for polygonals to minimize errors?
- How are the angles and sides of a polygonal calculated?
Polygonals typically have no more than ten sides, with each side measuring between 50 - 70 meters and 250 - 300 meters to minimize errors.
Each vertex angle of a polygonal is calculated using Bessel’s rule, while the length of each side is determined by the arithmetic mean between the reading-in and reading-out.
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