Viviani, Vincenzo
,
De maximis et minimis, geometrica divinatio : in qvintvm Conicorvm Apollonii Pergaei
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tranſuerſo latere, quod in Ellipſi, vel circulo non excedat eius
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tranſuerſum, MAXIMAM Ellipſim inſcribere, & </
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<
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<
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circumſcribere cum dato, pro circumſcribenda Hyperbola, quocunq;
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<
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">tranſuerſo latere, pro Ellipſi verò, cum tranſuerſo dato, quod maius ſit tranſ-
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uerſo datæ Ellipſis, vel circuli.</
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">Sit quælibet coni-ſectio, vel circulus ABC, cuius diameter BD, latus
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rectum BE, regula EF; </
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B _MAXIMAM_ Ellipſin inſcribere.</
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cum recto BE Ellipſis GHB. </
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<
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ſitque propior diametro, Ellipſis quoq; </
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roll. prop.
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19. huius.</
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& </
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<
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">erit _MAXIMA_ inſcriptibilium: </
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tranſuerſa diametro BG adſcripta, & </
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minor eſt Ellipſi GBH, quælibet verò Ellipſis eidem diametro BG
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roll. prop.
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19. huius.</
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pta cum recto BL, quod maius ſit dato recto BE maior eſt quidem
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roll. prop.
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19. huius.</
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GHB, ſed omnino _e_ ſecat ſectionem ABC, cum eius regula GL ſecet ſectio-
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nis regulam EL, infra contingentem BE. </
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