Euclidean geometry is a mathematical system attributed to the
Greek mathematician Euclid of
Alexandria. Euclid's text
Elements is the earliest known systematic discussion of
geometry. It has been one of the most influential books in history, as much for its method as for its mathematical content. The method consists of assuming a small set of intuitively appealing
axioms, and then proving many other
propositions (
theorems) from those axioms. Although many of Euclid's results had been stated by earlier Greek mathematicians, Euclid was the first to show how these propositions could be fit together into a comprehensive deductive and logical system.
See more at Wikipedia.org...