In particular, the USPS distributes mail to Regional Centers which are assigned to a particular 3-digit partial ZIP (for example, zip codes starting with 921 are in the San Diego, CA area). Check out the excellent zipdecode website to see how partial zip codes map to areas of the country.
A pendeloque is a pear-shaped modification of the round brilliant cut used for diamonds and other gemstones. See also. Briolette; Cut (gems) References
A pentomino is a plane geometric figure formed by joining five equal squares edge to edge. It is a polyomino with five cells. There are twelve pentominoes, not counting rotations and reflections as distinct. They are used chiefly in recreational mathematics for puzzles and problems. Ordinarily, the pentomino obtained by reflecting or rotating a pentomino does not count as a different pentomino. The F, L, N, P, Y, and Z pentominoes are chiral; adding their reflections (F', J, N', Q, Y', S) brings the number of one-sided pentominoes to 18. Pentominoes I, T, U, V, W, and X, remain the same when reflected.