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 112
t the circle, is equal to the square of BD which meets it;d ^r. o. the straight line BD touchesi the circle ACD ; and because BD touches the circle, and DC is drawn from the point of con-e 33. 3. tact D, the angle BDC is equals to the angle DAC in the alternate segment of the circle; to each of… … OF EUCLID. Ill but BDA is equals to the aiif^le CBD, because the side AD BookIV.is equal to the side AB ; therefore CBD, or DBA is equal to *»—v—BCD ; and consequently thT three angles BDA, DBA, BCD g 5.1.are equal to one another ; and because the angle DBC is equalto the angle BCD, the side BD is…
Euclid's Elements · Mathematics, Greek · Geometry
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