https://www.patreon.com/Mathoma
Heath's translation of Euclid's "Elements"
http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0086%3Abook%3D1%3Atype%3DProp%3Anumber%3D36
This series is part of a larger project, part of which covers geometry.
