The center as well as every other point in the surrounding open octagon has the itinerary of its label.
We also show how to use the triadic odometer augmented with plus and minus signs to track octagons.
Finally, the corners maybe emphasized to form an octagon, with sides of equal or different lengths.
In this and the following figures, rectangles represent algorithmic modules, octagons represent knowledge intensive modules, and rounded rectangles represent integrated modules.
The first consists of a countable union of disjoint open periodic islands, each of which is an open octagon.
We define the generation number of an actual vertex as the generation of the smallest octagon of which it is a vertex.
An important subset of is the set of vertices of octagons which is the same as the set of dart tips.
The western face of the octagon is occupied by a tall round-headed arch belonging to the original structure.