What does a radial survey involve?

A radial survey involves measuring angles and sides from a central point to gather information about the surrounding area. This method allows surveyors to obtain precise measurements of distances and angles, facilitating the determination of points relative to a central reference.

In a radial survey, the central point serves as the origin from which survey measurements radiate outward. By measuring angles relative to this point, the surveyor can ensure accurate positioning of multiple points surrounding the center. This technique is particularly useful in land surveying and mapping, where establishing a clear geometrical relationship between different locations is essential.

The incorrect options do not align fully with the fundamental approach of a radial survey. For example, measuring distances only ignores the essential angular measurements that provide the necessary context and accuracy for positional data. Similarly, while calculating areas could relate to survey work, it is not the primary function of a radial survey, which focuses more on establishing direct relationships between points. Lastly, drawing straight lines between points is a component of visualizing the data collected rather than a defining aspect of conducting a radial survey.