A model paper is avaialble here.

Here is a the website for background in hyperbolic geometry and its influence in Escher paintings. http://pi.math.cornell.edu/~mec/Winter2009/Mihai/index.html

Find the online version of Euclid's Elements here. https://mathcs.clarku.edu/~djoyce/elements/bookI/bookI.html

An article on 100 proofs of the Theorem of Pythogoras. http://www.cut-the-knot.org/pythagoras/

Ricardo Nirenberg's lecture on The Axiomatic Method. https://www.albany.edu/~rn774/fall96/euclid.html