<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type> This is the first comprehensive treatment of the history of the angle from Euclid to classical Arabic mathematics. The volume presents critically edited texts, with translations and commentaries, of Greek and Arabic philosophers and mathematicians including Euclid, Simplicius, al-Nayr?z?, Avicenna, Ibn al-Haytham, al-T?s?, al-Sh?r?z?, and al-F?ris?.