Girolamo Saccheri's Euclides Vindicatus (1920) est liber mathematicus qui continet demonstrationes geometriae Euclideae. Saccheri, qui vixit in saeculo XVII, defendit axiomata Euclideae geometriae et demonstravit theoremas quae non possunt probari ex his axiomatibus. In hac editione, Saccheri argumenta sua exponit et clarificat. Libellus est scriptus in lingua Latina et est adhibitus a mathematicis et philosophis ad investigandum geometriam et logicae fundamenta.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.