Theodosius <Bithynius>; Clavius, Christoph
,
Theodosii Tripolitae Sphaericorum libri tres
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cunferentia A F B, in F, in partes inæquales, & </
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tur in planum circuli A C B D, perpendicularis F L, quæ ad partes ſegmenti
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A D B, cadet, propterea quod ſegmentum A F B, ad ſegmentum A D C, eſt
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inclinatum, ita vt punctum L, ſit vel intra ſegmentum A D B, vel extra, vel
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certe in ipſa circunferentia A D B. </
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<
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meter agatur C D, & </
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F B, F G, &</
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<
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<
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</
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<
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<
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F, in circunferentiam A C, cadunt; </
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<
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<
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L, rectæ lineæ L B, L G, L H, L A, L I, L K, eruntque omnes anguli ad L,
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quos facit perpendicularis F L, recti, ex defin. </
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<
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15. tertil.</
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nino in ea figura, vbi punctum L, cadit in D.) </
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L C, L K, L I, L A, & </
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15. tertij. &
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47. primi.</
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cedenti, rectam F B, eſſe omnium minimam, & </
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F C, omnium maximam, & </
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A C, cadentium; </
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lum, &</
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cent, ab eorum verò vtroque æquales circunfe-
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rentiæ ſumantur vtrinque à puncto, in quo ſe ſe-
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cant: </
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rentiarum connectunt ad eaſdem partes, æquales
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inter ſe ſunt.</
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vno quoque vtrinque à B, ſumantur duo arcus æquales B A, B C, & </
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