oblong shapes are rectangular shapes with diagonal adjacent sides that are not equal in length.
rectangular shapes with diagonal adjacent sides that are not equal in length?
oblong
bullet::::- square (regular quadrilateral): all four sides are of equal length (equilateral), and all four angles are right angles. an equivalent condition is that opposite sides are parallel (a square is a parallelogram), that the diagonals perpendicularly bisect each other, and are of equal length. a quadrilateral is a square if and only if it is both a rhombus and a rectangle (four equal sides and four equal angles).









































bullet::::- "oblong": a term sometimes used to denote a rectangle that has unequal adjacent sides ("i.e." a rectangle that is not a square).
quadrilateral
bullet::::- in rin-chen lha-mo's work "we tibetans" (1926), she states that "the longer the sequence you can [capture] . . . the better and the sequence is not broken by going around a corner, thus:". this has been interpreted to mean that it may be possible to capture a corner piece, or a line(s) of pieces that occupy a portion of two adjacent sides of the board (hence at most one corner piece) by flanking them on two opposite ends provided there is no vacant space between any of the pieces, and rin-cen lha-mo actually provides an illustration showing just that. this rule is useful because it's generally difficult to perform these types of captures using the regular custodian method. however, some critics have debated whether this rule can be applied to any position on the board, or just with corner pieces. rin-chen lha-mo does however specifically state "...going around a corner...", and provides an illustrative example of pieces strictly going around a corner of the board. lastly, rin-chen lha-mo does not specify whether or not the two pieces used to flank the captured pieces must occupy the same two adjacent sides that the captured pieces are occupying, although based upon the illustrative example she gave, she may have been attempting to suggest that. for example, in the beginning of the game, can one player attempt to capture the other player's 14 pieces as it is initially laid out using this modified custodian method? she also does not specify if (any of) the two pieces can be corner pieces (but opposite one another on the board if both are corner pieces) since these two corner pieces would not only occupy the same adjacent sides of the captured pieces, but also the remaining two other sides.
ming mang (game)