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 107
the anglesDEG, DEF arelikewise equaH totwo right angles;therefore the an-gles AKB, AMBare equal to theangles DEG, DEFof which AKB is ^^ B N equal to DEG; wherefore the remaining angle AMB is equalto the remaining angle DEF: in like manner, the angle LNMmay be demonstrated to be equal to DFE; and… … PROP. IV. PROB. TO inscribe a circle in a given triangle. SeeN. Let the given triangle be ABC; it is required to inscribe acircle in ABC. Bisect a the angles ABC, BC A by the straight lines BD, CD » 9-1-meeting one another in the point D, from which draw DE, ^2-1.DF, DG perpendiculars to AB, A BC,…
Euclid's Elements · Mathematics, Greek · Geometry
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