""Euklids Data"" is a mathematical treatise written by the ancient Greek mathematician Euclid, originally published in 300 BCE. The book is a collection of geometric propositions and theorems, presented in a concise and logical manner. It covers a wide range of topics, including the properties of circles, triangles, and quadrilaterals, as well as the relationships between different shapes and angles. The book is divided into 15 chapters, each of which...