Theodosius <Bithynius>; Clavius, Christoph
,
Theodosii Tripolitae Sphaericorum libri tres
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E, F, polos parallelorum tranſeuntium, intercepti inter parallelos A B, H I,
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æquales, ac propterea exiſtente B H, quadrante per conſtructionem, erit & </
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L M, quadrans. </
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M N, qui maximus erit, quòd recta ſubtendens quadrantem L M, æqualis
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ſit lateri quadrati in maximo circulo deſcripti. </
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culus K L, tranſit per L, polum maximi circuli N M, tranſibit viciſsim ma-
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ximus circulus N M, per G, polum circuli K L: </
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<
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huius.</
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circulus N M, per datum punctum G. </
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A B, in M. </
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circulum E F, in quo polos habent, ipſi ſe mutuo tangent in M. </
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eſt ergo per G, circulus maximus G N, tangens circulum A B, in M. </
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circulo in ſphæra dato, &</
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quod rurſum erit polus circuli tangentis, vt prius. </
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idem, quod _D,_ erit polus circuli tangentis in medio arcus _D C A,_ cum hic arcus ſe-
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micirculus ſit. </
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in _D_, vt
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patet: </
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niam vi-
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delicet cir
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culus hic
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maximus,
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& </
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_C D,_ ſe-
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cãt in pũ-
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ctis _A,_ _D,_
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circunfe-
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rentiã ma
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ximi circuli _A C D B,_ in quo polos habent.</
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">_QVONIAM_ vero ſicut _L,_ polus eſt oſtenſus circuli maximi _G N,_ tangentis,
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circulum _A B,_ ita quoque oſtendi poteſt, aliud punctũ, in quo maximus circulus _K L,_
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circulum _H I,_ ex altera parte ſecat, polum eſſe alterius cuiuſdam circuli maximi,
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qui per _G,_ tranſeat, tangatq́; </
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ctum in ſphæra datum inter duos circulos æquales, & </
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circulos maximos, qui circulum _A B,_ tangant in duobus punctis.</
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<
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