Theon of Alexandria, was a Greek scholar and mathematician who lived in Alexandria, Egypt, his daughter was Hypatia, a Greek mathematician, astronomer, inventor, and philosopher in Egypt, then a part of which location?
Theon of Alexandria Theon of Alexandria ( ; Ancient Greek: Θέων ὁ Ἀλεξανδρεύς ; c. AD  335 – c. 405) was a Greek scholar and mathematician who lived in Alexandria, Egypt. He edited and arranged Euclid's "Elements" and wrote commentaries on works by Euclid and Ptolemy. His daughter Hypatia also won fame as a mathematician.
Buto Buto (Greek: Βουτώ , Arabic: بوتو‎ ‎ , "Butu"), Butus (Greek: Βοῦτος , "Boutos"), or Butosus, now Tell El Fara'in ("Hill of the Pharaohs") and the village of Ibtu or Abtu near the city of Desouk (Arabic: دسوق‎ ‎ ), was an ancient city located 95 km east of Alexandria in the Nile Delta of Egypt. The city stood on the Sebennytic branch of the Nile, near its mouth, and on the southern shore of the Butic Lake (Greek: Βουτικὴ λίμνη , "Boutikē limnē"). It is the modern "Kem Kasir".