**1.**

Euclid is often regarded as bridging between the earlier Platonic tradition in Athens with the later tradition of Alexandria.

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Euclid is often regarded as bridging between the earlier Platonic tradition in Athens with the later tradition of Alexandria.

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Euclid wrote works on perspective, conic sections, spherical geometry, number theory, and mathematical rigour.

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English name 'Euclid' is the anglicized version of the Ancient Greek name ????e?d??.

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Euclid is accepted as the author of four mostly extant treatises—the Elements, Optics, Data, Phaenomena—but besides this, there is nothing known for certain of him.

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Thus, the traditional outline—described by the historian Michalis Sialaros as the "dominant view"—holds that Euclid lived around 300 BCE in Alexandria while Ptolemy I reigned.

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Euclid's birthdate is unknown; some scholars estimate around 330 or 325 BCE, but other sources avoid speculating a date entirely.

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Proclus held that Euclid followed the Platonic tradition, but there is no definitive confirmation for this.

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The best known of these is Proclus' story about Ptolemy asking Euclid if there was a quicker path to learning geometry than reading his Elements, which Euclid replied with "there is no royal road to geometry".

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Euclid is best known for his thirteen-book treatise, the Elements.

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Euclid is generally considered with Archimedes and Apollonius of Perga as among the greatest mathematicians of antiquity.

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