What are the three most common methods of measurement used in crime scene investigation?

Triangulation, Rectangular Coordinate Method, and Base Line are established methods commonly used in crime scene investigations for accurate measurement and documentation.

Triangulation involves measuring the distance from two fixed points to a specific object or location at the crime scene, creating a triangle. This method is effective for determining the exact position of evidence or other important scene features, ensuring precision in the documentation process.

The Rectangular Coordinate Method, also known as the Cartesian coordinate system, utilizes a grid system to pinpoint locations within the crime scene. This method provides a clear framework for measuring distances and is particularly useful in structured environments where two reference points can be established along a grid.

The Base Line method involves creating a straight baseline in the area being investigated, from which measurements can be taken at right angles to establish the position of evidence. This approach is helpful in scenes that may not lend themselves to triangulation or grid methods due to spatial constraints.

These three methods collectively ensure that investigators can record the position of evidence accurately and consistently, which is crucial for the integrity of an investigation and any subsequent legal proceedings. Other options listed do not represent standard measurement techniques recognized for maintaining such accuracy and consistency in crime scene documentation.