Arches

1. An upthrust must be as hish as the __________ ridges are thick.
5. Has no direction
6. There are two types of these
7. Arch Possesses either an angle, an upthrust or two of the three characteristics of a loop
9. ridge When classifying an _______ ________- If the ridges on both sides of the __________ ________ follow its direction or flow trend, the print may be classified as a plain arch
10. If ridge ends in space, ridge must change _________ 45 degrees or more to be classified as a tented arch
11. Join two ending ridges by an __________ recurve so that a ridge count is obtained
14. Has two equally good loop formations, going in opposite directions, and one delta; only one possibility
16. All ridges touching ridge below or above not at 90 degrees are considered ____________

2. Count If no ______ ______ is obtained, it is classified as a plain arch
3. Must be and ending ridge--a ridge which ends in space-definite change in direction-45 degrees or more
4. The ending ridges must NOT turn __________
7. Most angular type tented arches have a __________ to flow in one side of the pattern and out on the opposite side
8. Formed by tow ridges meeting at an angle; must be 90 degrees or less
12. If ridge in question touches ridge above or below, the ridge in question must form a ___________ degree angle
13. Two of the three basic characteristics of the loop; lack one of these: delta-recurve-ridge count
15. The ridges enter upon one side make a rise or wave in the center and flow or tend to flow out upon the opposite side