en.wikipedia.org/wiki/Euclid

Euclid sometimes called Euclid of Alexandria to distinguish him from Euclides of Megara, was a .... to as Euclidean geometry to distinguish it from other so-called non-Euclidean geometries that mathematicians discovered in the 19th century.

en.wikipedia.org/wiki/Euclid%27s_Elements

The Elements is a mathematical treatise consisting of 13 books attributed to the ancient Greek ... the only surviving source until François Peyrard's 1808 discovery at the Vatican of a manuscript not derived from Theon's. .... Euclid's original proof of this proposition, is general, valid, and does not depend on the figure used ...

biography.yourdictionary.com/articles/who-is-euclid-and-what-did-he-do.html

A common misconception is that Euclid invented all concepts of geometry. ... Euclid existed around 300 BC, and he was a prominent figure in Greek culture at the time as a thinker ... Euclid was said to be the man who discovered geometry.

www.math.wichita.edu/history/men/euclid.html

Euclid actually made few discoveries. He did make a few, but very minute ones. His books, the Elements, are based on the works of people before him.

www.storyofmathematics.com/hellenistic_euclid.html

The Greek mathematician Euclid lived and flourished in Alexandria in Egypt around 300 BCE, during the reign of Ptolemy I. Almost nothing is known of his life , ...

www.thefamouspeople.com/profiles/euclid-436.php

Jul 21, 2017 ... Euclid was a renowned Greek mathematician, known as the 'Father of Geometry'. ... Top 10 Facts You Did Not Know About Euclid ... so-called non-Euclidean geometries that mathematicians discovered in the 19th century.

explorable.com/euclid

Euclid enters history as one of the greatest of all mathematicians and he is often referred to as the father of geometry.

www.quora.com/What-did-Euclid-discover

Euclid discovered that aspects of nature could be described mathematically through a system of geometry he developed. This system and some of its implication ...

derrel.net/math/euclid/euclid_inventions.htm

Euclid's Inventions. Of Euclid's inventions his most famous is The Elements, which was the base of geometry. The Elements were based on the geometry of the ...