Nuno Luzia. A Proof of The Pythagorean Theorem After Descartes. The American Mathematical Monthly, 123(4):386, 2016. [doi]
@article{Luzia16, title = {A Proof of The Pythagorean Theorem After Descartes}, author = {Nuno Luzia}, year = {2016}, url = {https://www.tandfonline.com/doi/abs/10.4169/amer.math.monthly.123.4.386}, researchr = {https://researchr.org/publication/Luzia16}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {123}, number = {4}, pages = {386}, }