Regarding your final comment on proof #43, I was not sure if you had seen this page:http://demonstrations.wolfram.com/MamikonsProofOfThePythagoreanTheorem/It has a nice animation and the final statement about the PT is an image on this page as well:http://demonstrations.wolfram.com/MamikonsProofOfThePythagoreanTheorem/HTMLImages/index.en/popup_9.jpg
http://demonstrations.wolfram.com/MamikonsProofOfThePythagoreanTheorem/
It has a nice animation and the final statement about the PT is an image on this page as well:
http://demonstrations.wolfram.com/MamikonsProofOfThePythagoreanTheorem/HTMLImages/index.en/popup_9.jpg