**Plane surveying**

Plane surveying is the process of surveying by assuming that the earth is flat. Which mean the curvature or spherical shape of the earth is not considered in plane surveying calculations.

**Geodetic surveying**

Geodetic surveying is a process of surveying by considering the curvature or spherical shape of the earth. The exact positions of points obtained on plane surveying are given by geodetic.

Difference Between Plane Surveying and Geodetic Surveying

**Plane Surveying**

- Earth surface is assumed as plain
- Line formed by any two points are considered as straight line – as the same angles are plain angles
- Suitable for small area surveying
- Survey accuracy is low
- Economic and easy survey method

**Geodetic Surveying**

- Earth surface is considered as spherical
- Line formed by joining any two points are considered as arch –as the same angles are spherical angles
- Suitable for large area surveying
- Survey accuracy is high
- Special instrument needed and long survey method

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Greant answer

Why earth curvature is neglected in plane survey?

In plane survey, a small area is under survey thus the earth is considered to be a plane neglecting its curvature

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