Ptolemy (85 - 165) - Biography - MacTutor History of Mathematics

Ptolemy was the most influential of Greek astronomers and geographers of his time. He propounded the geocentric theory of the solar system that prevailed for 1400 years.

Timeline of Islamic science and engineering

Early Proofs of the Pythagorean Theorem by Leonardo Da Vinci, Ptolemy, Thabit ibn Qurra, and Garfield - Owlcation

Timeline Project by Natalie Tuites

Euclid (325 BC - 265 BC) - Biography - MacTutor History of Mathematics

Claudius Ptolemy: The Mathematics of Celestial Motion

Claudius Ptolemy : Greek Mathematician, Astronomer » Vedic Math School

The New Astronomy at the Dawn of the Scientific Revolution

Mathematics - Wikipedia

Timeline Project by Natalie Tuites

Al-Khwarizmi (790 - 850) - Biography - MacTutor History of Mathematics

Galileo Galilei - Wikipedia

MYSTERIES OF THE EQUILATERAL TRIANGLE - HIKARI Ltd

Early Proofs of the Pythagorean Theorem by Leonardo Da Vinci, Ptolemy, Thabit ibn Qurra, and Garfield - Owlcation

CS585 Topics: Knowledge Representation Ray Schneider - ppt download