ASIS International (ASIS) Professional Certified Investigator Practice Exam

Question: 1 / 400

In fingerprint analysis, what does the term 'delta' refer to?

A type of fingerprint pattern

A point where ridge lines fork

In fingerprint analysis, the term 'delta' refers to a specific feature that occurs in certain types of fingerprint patterns, particularly in whorls and some loops. It is defined as the point where one or more ridge lines diverge or fork. This point is crucial because it helps in classifying the fingerprint pattern and in subsequent analysis for identification purposes. The delta provides important reference points in relation to other ridge patterns, which are essential for accurately describing and comparing fingerprints.

Understanding the concept of a delta is fundamental for forensic experts and investigators, as it plays a key role in establishing the uniqueness of a fingerprint, aiding in both identification and comparison processes. The presence and position of deltas can significantly influence the way fingerprints are categorized, assisting in the differentiation between various fingerprint classes.

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An area of high ridge density

A measurement used in comparison

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