1. Fingerprint Principles
Fingerprints follow ___ fundamental principles:
A fingerprint is an _______________ characteristic; no two people have been found with the ______ same fingerprint pattern. 1

2. Fingerprint Principles
A fingerprint ______ will remain _________ for ____; however, the print itself may change due to permanent ______ and skin _________. 2

3. Fingerprint Principles
Fingerprints have general characteristic ________ patterns that allow them to be systematically __________. 3

4. Fingerprint Classes
There are __ specific classes for all fingerprints based upon their ______________: arches, loops, and whorls.
Each group is divided into ________________ 4

5. _____ of people have loops, _____ have whorls,
Interesting Info
Fingerprint Factoid:
_____ of people have loops, _____ have whorls,
and _____ have arches 5

6. 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

7. 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

8. 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

9. 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

10. 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

11. 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