欧几里得ōu jǐ lǐ déoujilideEuclid of Alexandria (c. 300 BC), Greek geometer and author of the Elements 幾何原本|几何原本[Ji3 he2 Yuan2 ben3]Characters in this word几small table得to obtain, to get, to acquire欧Europe, ohm里unit of distance equal to 0.5kmStudy it in Yanamino