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## The geometry
This diagram shows how it works: First there is the large heptagon. Its sides are divided in half and again in half (a), when you get the points 'x' (upper left corner). Connecting these in two ways you get first the inner red heptagon (x-x1) and the black star, then the second largest green heptagon (x-x2). By connecting the corners of this, you get the second smallest heptagon (z-z1). Now you have all the borders except the ones that cut the points of the star, which you get by connecting the corners of the original heptagon (y-y1). I also tried to figure out the logic in the positioning the small circles inside and outside. They seem to be positioned rather regularly in theory, but in the actual formation their positioning is a bit "loose". It's difficult to really determine their part in all this because of this fact. |
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