"Euclid of Alexandria; \u0395\u1F50\u03BA\u03BB\u03B5\u03AF\u03B4\u03B7\u03C2"@en . "Euclid (/\u02C8ju\u02D0kl\u026Ad/; Greek: \u0395\u1F50\u03BA\u03BB\u03B5\u03AF\u03B4\u03B7\u03C2 Eukleid\u0113s Ancient Greek: [eu\u032F.kl\u011B\u02D0.d\u025B\u02D0s]; fl. 300 BC), sometimes called Euclid of Alexandria to distinguish him from Euclid of Megara, was a Greek mathematician, often referred to as the \"Father of Geometry\". He was active in Alexandria during the reign of Ptolemy I (323\u2013283 BC)."@en . "0003Z"^^ . . "Euclid"@en . "Greek mathematician" . . "0004Z"^^ . . . .