Theodosius <Bithynius>; Clavius, Christoph
,
Theodosii Tripolitae Sphaericorum libri tres
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laris F G, quæ vtrinque ad ſuperficiem ſphæ-
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ræ educta ad puncta A, C, ſecetur bifariam in
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G. </
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<
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eſt, ſit, ſi fieri poteſt, centrum H, ſecans diame
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tros omnes bifariã, quod quidem in linea A C,
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nõ exiſtet, cũ ea in puncto G, ſolũ bifariã diui
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datur, ſed extra illã. </
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<
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xml:space
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ſphæræ ad planum circuli B D E, perpendicu
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laris H I, quæ æquidiſtans erit lineæ F G; </
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proinde in punctum F, non cadet: </
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tunc duæ parallelæ H I, G F, in F, puncto,
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quod fieri non poteſt. </
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dicularis ex centro ſphæræ in planũ circuli B D E, demiſſa cadit in eius cen-
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huius.</
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trum, erit I, centrum circuli B D E. </
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eiuſdem circuli. </
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beat centrum neceſſe eſt. </
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ſphæræ. </
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tro excitetur perpendicularis ad ipſius planum, in linea perpendiculari centrũ eſſe ſphærę.
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tangit in pluribus punctis vno.</
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<
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bus punctis vno, vt in A, & </
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ctæ C A, C B: </
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num faciens quidem in ſuperficie ſphæræ cir
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cumferentiam circuli A B D, in plano autẽ
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ſecante rectam lineam E A B F. </
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planũ tangens, in quo eſt recta E A B F, ſphæ
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ram non ſecat, atque adeò neque circulum
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A B D, in ſphęrę ſuperſicie exiſtentem, fit vt
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neq; </
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ergo recta A B, tota extra circulũ. </
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<
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vero duo puncta ſumpta ſunt A, B, in circũfe
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rentia circuli A B D, cadet eadem recta A B, à
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pũcto A, in punctũ B, ducta tota in tra circulũ
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A B D. </
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à quo nõ ſecatur, nõ tangit in pluribus pũctis vno. </
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ſphæram cadere. </
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<
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tiam habet.</
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