What is the purpose of the triangulation method in crime scene investigation?

The triangulation method in crime scene investigation serves to establish reference points when identifiable objects are absent. This technique utilizes fixed points in the environment (such as buildings or street intersections) to create a measurable and accurate map of where evidence is located within the crime scene. By forming triangles between known reference points and the object of interest, investigators can precisely determine the location of key evidence, which is essential for maintaining the integrity of the investigation and for presenting information in court.

Triangulation is particularly valuable in open areas or scenes that lack distinct landmarks, enabling investigators to reconstruct scenes accurately. In contrast, other methods such as collecting DNA evidence, providing visual illustrations, or documenting witness statements do not directly involve mapping or establishing geographical context, which is the primary function of triangulation in crime scene analysis.