The Elements of Euclid : viz. the first six books, together with the eleventh and twelfth : 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 (1806)
Euclid, Simson, Robert, 1687-1768, Euclid. Elements. Book 11-12. English. 1806, Euclid. Data. English. 1806, Simson, Robert, 1687-1768. Notes, critical and geometrical. 1806, Simson, Robert, 1687-1768. Elements of plane and spherical trigonometry. 1806 · Philadelphia : Published by Mathew Cary, and sold by J. Conrad & Co., S.F. Bradford, Birch & Small, and Samuel Etheridge, printed by T. & G. Palmer ... · leaf 197
tangle BD, CE :again, because the angle ABE is e-qual to the angle DBC, and the an-gle a BAE to the angle BDC, the tri-angle ABE is equiangular to the tri-angle BCD: as therefore BA to AE,so is BD to DC ; wherefore the rect-angle BA, DC is equal to the rect-angle BD, AE : but the rectangle BC, AD… … c 16. 6. • This is a lemma of CI. Ptolomjcus, in page 9. of his KryttM o-u»t*|<5- THE ELEMENTS OF EUCLID. BOOK XL DEFINITIONS. I.Book XI. A SOLID is that which hath length, breadth, and thickness. ^■^^^ II. That which bounds a soUd is a superficies. III. A stiaight line is perpendicular or at…
Euclid's Elements · Mathematics, Greek · Geometry
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