The postulates are not self-evident, but they are necessary for the development of geometry.
Father of geometry
Implied understanding from the structure of 'Elements', though not a direct quote.
c. 300 BCE
Found in 1 providers: grok
Cross Reference
1 source
"What has been affirmed without proof can also be denied without proof."
Strange & Unusual"A boundary is that which is an extremity of anything."
Strange & Unusual"A ratio is a sort of relation in respect of size between two magnitudes of the same kind."
Strange & Unusual"To describe a circle with any centre and radius."
Shocking"No trace of Euclid's personality has survived."
Shocking