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geometry | Webel IT Australia "The Elements of the Web"

# geometry

Keywords:

## Square (regular quadrilateral)_ all four sides are of equal length (equilateral), and all four angles are right angles

The redefined analysis properties are not suggestions for an implementation strategy, they merely help encapsulate constraints. Note that the Lines, Diagonals, and Angles are considered derived from the Points of the Polygon as the true variables (which is also only an indication).

There are as many ways of implementing the Square as there are paths through the taxonomy. From an implementation efficiency point of view it may indeed by best to completely ignore inherited attributes, making the meeting of the contract completely operation-driven.

## Rhombus or rhomb: all four sides are of equal length.

Not expanded in detail here, since emphasis is on deriving Square and Rectangle.

## A diagonal can refer to a line joining two nonconsecutive vertices of a polygon or polyhedron

Only a Diagonal of 2D Polygon considered here.

In this case the UML model elements are adorned with mathematical notations indicating the author's understanding of the sentence, which are not explicit in the source text.

Note the UML "Object Diagram" exploring a possible diagonal of a polygon. The simple composite structure features of UML™ composite structures and the more advanced deep structure and value state modelling possibilities of SysML Internal Block Diagrams (IBDs) provide more possibilities for representing object-llike information gleaned from source text, and stronger binding to Properties of domain Classes.

randomness