Whorl

Double Loop Whorl

Ulnar Loop

Radial Loop

Arch

Tented Arch

Notice the inner area of the pattern, that is the area which tends to form a circle? This is what you would call the inner pattern area and it is what make a whorl look like a whorl. It contains 2 delta.

There ‘re 6 different whorl, for more information, just click" The identification of whorl ".

A double loop whorl consists of two separate and distinct loop formations with two separate and distinct shoulders and two deltas.

In a loop pattern, one or more of the ridges enters on either side of the impression, recurves, touches or crosses the line of the glass running from the delta to the core, and terminates or tends to terminate on or in the direction of the side where the ridge or ridges entered. There is one delta.

It looks just like ulnar loop, but the curve go out towards your thumb.
There is one delta.

the plain arch tends to flow rather easily through the pattern with no significant changes.
There is ordinarily no delta.

It looks like the plain arch. In patterns of the tented arch type, the ridges near the middle have an upward thrust, arranging themselves, as it were, on both sides of a spine or axis, towards which the adjoining ridges converge.