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Fingerprint Principles
Fingerprints follow ___ fundamental principles: A fingerprint is an _______________ characteristic; no two people have been found with the ______ same fingerprint pattern. 1
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Fingerprint Principles
A fingerprint ______ will remain _________ for ____; however, the print itself may change due to permanent ______ and skin _________. 2
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Fingerprint Principles
Fingerprints have general characteristic ________ patterns that allow them to be systematically __________. 3
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Fingerprint Classes There are __ specific classes for all fingerprints based upon their ______________: arches, loops, and whorls. Each group is divided into ________________ 4
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_____ of people have loops, _____ have whorls,
Interesting Info Fingerprint Factoid: _____ of people have loops, _____ have whorls, and _____ have arches 5
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Arches Arches are the __________ type of fingerprints that are formed by ________ that _______ on one side of the print and _______ on the other. No _______ are present. Tented Arches Similar to the plain arch, but has a ______ in the center. Spike or “tent” Plain Arch Ridges enter on one side and exit on the other side. 6
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Loops Radius Ulna Left Hand Loops must have ________ and one or more ridges that _______________ on the same side. These patterns are named for their positions related to the _______ and ______ bones based on the bone the loop ________ is facing. Ulnar Loop Radial Loop Delta
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Whorls Whorls have at least ____ ridge that makes a _________ ________. They also have at least ____ deltas. If a print has more than two deltas, it is most likely an __________. Central Pocket Whorl Plain Whorl 8
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Whorls Draw a line between the two deltas in the plain and central pocket whorls. If _______ of the _______ ________touch the line, it is a _____ whorl. If ______ of the center core touches the line, it is a __________ _______ whorl. Central Pocket Whorl Plain Whorl 9
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Whorls Double Loop Whorl ________________whorls are made up of any two loops combined into one print. Delta Accidental Whorl ____________ whorls contain ____ or more patterns or does not _______ fall under any of the other categories. 10
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Identify each fingerprint pattern.
? A B Right Hand Left Hand Answer Key: A - Plain Whorl, B – Double Loop Whorl, C – Radial Loop, D – Tented Arch, E – Plain Arch C E D Right Hand Right Hand Left Hand 11
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