**Fact 1**

Euclid of Alexandria is often called the "Father of Geometry".**Fact 2**

Euclid was working in Alexandria during the rule of Ptolemy I (323–283 BC).**Fact 3**

His ‘Elements’ is one of the most powerful works in the history of mathematics, considered the chief textbook for mathematics (particularly geometry) from the time of its creation till the late 19th or early 20th century.**Fact 4**

In the Elements, Euclid inferred the values of what is now called Euclidean geometry from a minor set of axioms. Euclid also wrote works on spherical geometry, perception, conic sections, number theory and rigor.**Fact 5**

"Euclid" is a Greek word, meaning "Good Glory".**Fact 6**

Although several of the results in Elements began with prior mathematicians, one of Euclid's achievements was to present them in a single, logically comprehensible framework, making it simple to use and easy to mention.**Fact 7**

Euclid’s Optics is the first surviving Greek dissertation on perspective.**Fact 8**

Data deals with the kind and repercussions of "given" information in geometrical difficulties; the subject substance is closely connected to the first 4 books of the Elements.**Fact 9**

Little is known about Euclid's life because there are only a few references to him in history.**Fact 10**

The few historical references to Euclid were made years after he lived, by Proclus and Pappus of Alexandria.

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