LACROIX, Éléments de géométrie, 1803

Thirs edition.
Sylvestre François Lacroix (1765-1843) was a French mathematician and educator whose textbooks had a considerable influence on mathematics education in the early 19th century. His Éléments de géométrie (Elements of Geometry) was specifically intended for the École Centrale des Quatre-Nations, a key institution of post-revolutionary education. The work not only presents geometric concepts but also includes methodological reflections on the teaching of mathematics, highlighting Lacroix's innovative approach to scientific pedagogy. The third revised and corrected edition testifies to the importance and popularity of this textbook.