Theodosius <Bithynius>; Clavius, Christoph
,
Theodosii Tripolitae Sphaericorum libri tres
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Igitur arcus B E, A G, ſimiles erunt: </
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<
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<
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</
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<
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xml:space
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">Similes ergo ſunt inter ſe A G, A D; </
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<
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xml:space
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">ac proinde, cum ſint eiuſdem circuli,
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inter ſe æquales erunt, totum, & </
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<
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<
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circulus maximus per E, ductus præter D E F, parallelum B E, tangit in E,
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ſi A B C, eundem in B, tangit. </
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xml:space
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<
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xml:space
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eundem B E.</
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<
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A D C, G H, circunferentias ſimiles A D, G H; </
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<
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lelorum polos ducatur, aut alterum eorum tangat. </
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<
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xml:space
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A B C, D E F, tangere alium quendam pa-
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rallelum ipſis A D C, B E, minorẽ. </
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niam enim circulus maximus A B C, neque
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tranſit per polos parallelorum, neque alte
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rum ipſorum tangit, erit circulus maximus
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A B C, ad vtrumque parallelorum A D C,
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G H, obliquus. </
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<
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ret per ipſorum polos, quod non ponitur.
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</
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Tanget igitur A B C, duos circulos æqua-
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les inter ſe, & </
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<
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G H. </
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nor erit vtroque A D C, G H; </
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ipſos ſecet) atque adeo & </
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lis, & </
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<
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xml:space
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">ac {pro}inde paralleli A D C,
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G H, poſiti erũt inter illos duos, quos circulus A B C, tangit. </
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eundem B E, tangere. </
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<
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xml:space
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eſt inter circulum B E, & </
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<
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">15. huius.</
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culus maximus K H, tangens B E, in I; </
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I, per H, alter vero ex B, per G, tranſit, non coeuntes, vt conſtat ex figura
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propoſi. </
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<
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tis ibidem. </
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<
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les erunt: </
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<
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<
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ſimiles. </
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<
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<
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adeo, cum ſint eiuſdem circuli, inter ſe æ-
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quales erunt, totum & </
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<
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<
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ſurdum. </
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<
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mus per H, deſcriptus, præter D E F, paral-
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lelum B E, tangit, ſi A B C, eundem tangit
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in B. </
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<
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tanget & </
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<
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<
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maximi circuli, qui ſimiles circunferentias,
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&</
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<
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">_MANIFESTVM_ autem eſt, circulos maximos _A B C, D E F,_ ita tangere
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eundem parallelum _B E,_ vt ſemicirculi eorum à contactibus per arcus ſimiles proce-
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dentes non coeant. </
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<
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