Loops

In a Loop pattern, the ridges will  flow in one side, recurve, (loop  
around) touch or pass through an imaginary line drawn from the  
delta to the core, and exit the pattern on the same side as it entered.

     *A loop pattern has only one delta.
     *There are two types of loop patterns:
               1. Ulnar loop
               2. Radial loop
*Loop patterns account for atleast 70% of all fingerprints

Whorls

A whorl pattern consists of a series of almost concentric circles.

     * A whorl pattern has two deltas

     *There are four types of whorl patterns:
                1. Plain whorl,
                2. Central Pocket Loop whorl,
                3. Double Loop whorl,
                4. Accidental whorl

*Whorl patterns account for atleast 25% of fingerprints

Arches

  In an arch pattern, ridges flow in one side and flow out the
opposite side. There are no deltas in an arch pattern.

     *There are two types of arch patterns:  
             1. Plain arch,
             2. Tented arch

Arch pattern account for atleast 5% of all fingerprints