Lecture 12

We started discussing Book I of Euclid's Elements. Our goal is to arrive to the proof of Pythagoras' Theorem (Proposition I.47).
We started reading all 23 Definitions, 5 Postulates and 5 Common Notions which form the preamble of Book I. In particular we commented on: In addition we went over the proofs of the following Propositions: Click on the above links to go directly to the proofs and commentaries of the results.