Euclid Euclid Euclid (; – "Eukleídēs", ; fl. 300 BC), sometimes given the name Euclid of Alexandria to distinguish him from Euclides of Megara, was a Greek mathematician, often referred to as the "founder of geometry" or the "father of geometry". He was active in Alexandria during the reign of Ptolemy I (323–283 BC). His "Elements" is one of the most influential works in the history of mathematics, serving as the main textbook for teaching mathematics (especially geometry) from the time of its publication until the late 19th or early 20th century. In the "Elements", Euclid deduced the theorems of what
Patriarch Peter VII of Alexandria Patriarch Peter VII of Alexandria Petros VII (September 3, 1949 – September 11, 2004) was the Greek Orthodox Pope and Patriarch of Alexandria and all Africa from 1997 to 2004. During his reign, Petros VII was credited with reviving the Greek Orthodox churches in Africa by increasing the churches' attendance of about 250,000 people. Petros was born Petros Papapetrou () in Sichari, Kyrenia District, Cyprus on September 3, 1949. He was the oldest son of a Greek Orthodox family and both his father and grandfather were priests. At the age of 12, Petros enrolled at the Machairas Monastery. Then at