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.
Pella, Jordan Pella (Ancient Greek: Πέλλα, also known in Arabic as "Tabaqat Fahl", طبقة فحل) is found in northwestern Jordan, 27.4 km (17 miles) south of the Sea of Galilee. Pella represents one of ten Decapolis cities that were founded during the Hellenistic period and became powerful under Roman jurisdiction. With a history extending back into the Bronze Age, Pella expanded to its largest state during the reign of the Roman Empire. Pella is located in the Jordan Valley, 130 km (80 miles) north of Amman, and is half an hour by car from Irbid, in the north of the country. Today, the city's sizable collection of ruins are excavated by archeologists, and attract thousands of tourists annually.