Colorado Land Surveyor Practice Exam

Control points are fundamental in surveying as they serve as established reference points with known coordinates. These points allow surveyors to create accurate and consistent measurements across a surveying project. By using control points, surveyors can ensure that their data is aligned with existing geographical coordinates, thus maintaining the integrity of the survey.

These points provide a reliable foundation from which other measurements can be taken, effectively linking surveys together in a cohesive manner. For example, when conducting a large-scale project, control points help in referencing various locations and ensuring that the measurements taken are consistent with previously established data.

In the context of the other options, points with unknown positions would not provide the necessary reliability for creating consistent measurements, and points used exclusively for vertical measurements are too limited in their application. Random points chosen during a survey would lack the defined precision needed for creating a comprehensive survey plan. Hence, the designation of control points as references in surveying underscores their crucial role in achieving an accurate spatial framework.