Title: The elements of Euclid, viz. the first six books together with the eleventh and twelfth
Subtitle: The errors by which Theon, or others, have long ago vitiated these books are corrected and some of Euclid's demonstrations are restored. Also the book of Euclid's Data, in like manner corrected.
Subjects: Euclid's Elements, Geometry, Early works to 1800, Trigonometry