RAFFAELLO Sanzio
(b. 1483, Urbino, d. 1520, Roma)

The School of Athens (detail)

1509
Fresco
Stanza della Segnatura, Palazzi Pontifici, Vatican

On the right side of the scene, Euclid is using a compass to explain a geometric problem in a drawing. Behind stands the geographer Ptolemy, recognizable thanks to his crown and world sphere, and the astronomer Zoroaster, who is presenting the sphere of the stars.