Euclid in a detail from the School of Athens

    Caption: Euclid (fl. 300 BCE) in a detail from The School of Athens (1509--1511).

    The hair-challenged Euclid is giving the totally-engaged and luxurously hirsute students a lesson in geometry.

    Hipparchus (c.190--c.120 BCE) and Ptolemy (c.100--c.170 CE) are about to drop globes on Euclid. A celestial globe by Hipparchus (c.190--c.120 BCE) and an Earth globe by Ptolemy (c.100--c.170 CE).

    The model for Euclid was Donato Bramante (1444--1514) (see Wikipedia: The School of Athens: Program, subject, figure identifications and interpretations).

    Credit/Permission: Raphael (1483--1520), 1510--1511 (uploaded to Wikipedia by User:Cyberpunk, 2006) / Public domain.
    Image link: Wikipedia: File:Euclid.jpg.
    Local file: local link: euclid.html.
    File:
    Ancient Astronomy file: euclid.html.