欧式几何 ōushìjǐhé Euclidean geometry Definitions Defs Origin Strokes Stroke Words Sentences Sents 欧式 歐式 ōushì Euclidean referring to the Greek mathematician Euclid or his geometry几何 幾何 jǐhé geometry geometry; often used as a short form for 几何学 jǐhéxué