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Delta
A triangular ridge pattern with ridges going in different directions above and below a triangle
Arch
Fingerprint pattern where a ridge starts on one side and finishes on the other, 5%, no deltas
Loop
Fingerprint pattern where a ridge starts on one side, loops around, and finishes on the same side, 65%, one delta
Whorl
Fingerprint pattern where ridges form a bullseye, 30%, two deltas
Core
The center of a loop or whorl
Minutiae
Unique details in the shape and position of ridges that make each fingerprint unique
Ten Card
Form used to record a person’s fingerprints
IAFIS/AFIS
Integrated Automated Fingerprint Identification System, a database of fingerprints created by the FBI
Fingerprint
Raised ridges of skin on fingers and toes called friction ridges
Types of Fingerprints
Patent, Latent, Plastic
Fingerprint Formation
Process starting at 10 weeks of pregnancy and completing when the fetus is 6 months old
Ridge Patterns
Whorls, Loops, Arches
Fingerprint Comparison
Levels 1, 2, 3 for identification and examination
Evaluation
Identification, Exclusion, Inconclusive outcomes in fingerprint analysis.