The development of script-using ancient civilizations and their achievements in sciences such as astronomy and mathematics have been well researched. Illiterate cultures were able to attain an adequate level of knowledge and transferred this knowledge to succeeding generations via oral tradition and mnemonic artefacts. The constructions of the square ditched enclosures (Viereckschanzen) of the last phase of the La Tene period (LT D, 150-1 BC) are documentations of the mathematical knowledge of this culture and served as a kind of mnemonic artefact. The constructions comprise the application of Pythagorean theorem (in terms of Pythagorean triangles) and square-root approximation triangles. Via these types of triangles, convex quadrangles are constructed (i.e., trapezium, parallelogram, rectangle, kite, lozenge, and square). The constructions were laid out in the terrain on the basis of a consistent ‘Babylonian/Egyptian’ metrology.

中文翻译：

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La Tène 文化 Viereckschanzen 的数学

使用文字的古代文明的发展及其在天文学和数学等科学方面的成就得到了很好的研究。文盲文化能够获得足够的知识水平，并通过口述传统和助记手工艺品将这些知识传给后代。La Tene 时期（LT D，公元前 150-1 年）最后阶段的方形沟渠围墙 (Viereckschanzen) 的建筑是这种文化的数学知识的记录，并作为一种助记器。这些构造包括应用勾股定理（就勾股三角形而言）和平方根近似三角形。通过这些类型的三角形，构成凸四边形（即梯形、平行四边形、矩形、风筝形、菱形和正方形）。