bn:21706227n
Noun Concept
Categories: Pythagorean symbols, Symbols, Poetic form, Genres of poetry, Mathematical symbols
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Tetractys
EN
The tetractys, or tetrad, or the tetractys of the decad is a triangular figure consisting of ten points arranged in four rows: one, two, three, and four points in each row, which is the geometrical representation of the fourth triangular number. Wikipedia
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EN
The tetractys, or tetrad, or the tetractys of the decad is a triangular figure consisting of ten points arranged in four rows: one, two, three, and four points in each row, which is the geometrical representation of the fourth triangular number. Wikipedia
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