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 (1834)
Euclid, Euclid, Simson, Robert, 1687-1768 · Philadelphia : Desilver & Thomas · leaf 371
which bisects the angle: and the rectangle con-tained by both these lines together which contain thegiven angle, and the part of the bisecting line cut oft*below the base of the segment, shall be given. Let the straight line BC be drawn within the circle ABC givenin magnitude, cutting off a segment… … 368 Euclids data. line ED cut off from AD below BC the base of the segment, isgiven. Join BD; and because BC is drawn within the circle ABCgiven in magnitude, cutting off the segment BAC, containing thegiven angle BAC; BC is given (91. dat.) in magnitude: by thesame reason BD is given: therefore…
Mathematics, Greek · Geometry · Trigonometry
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