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 202
ght line. Let two planes AB, BC, cut one another, and let the line DBbe their common section : DB is a straightline : if it be not, from the point D to Bdraw, in the plane AB, the straight lineDEB, and in the plane BC the straightline DFB: then two straight lines DEB,DFB have the same extremities,… … PROP. IV. THEOR. See N. 5ll5. 1. b 4. 3. c26. 1. IF a straight line stand at right angles to each oftwo straight lines in the point of their intersection, itshall also be at right angles to the plane which passesthrough them, that is, to the plane in which they are. Let the straight line EF stand…
Euclid's Elements · Mathematics, Greek · Geometry
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