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le triple triangle étoilé, le pentagramme »,
Jean-François Mattéi • Pythagore et les pythagoriciens: « Que sais-je ? » n° 2732 (French Edition)

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It is an ancient symbol used by several cultures, and remains in common use today. It belongs to a class of symbols which are called valknute in Norway.[4]
en.wikipedia.org • Looped Square - Wikipedia
Create an organizational chart to look like a pyramid, with straight lines down that don’t cross. The whole organization should look like a series of descending pyramids, but the number of layers should be limited to minimize hierarchy.