Viviani, Vincenzo
,
De maximis et minimis, geometrica divinatio : in qvintvm Conicorvm Apollonii Pergaei
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tercepta applicatarum ſegmenta metitum, licet ſemper magis, ac magis de-
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creſcat, eſſe tamen non minus interuallo 1 3, quod iuxta eaſdem æquidi-
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ſtantes ordinatim ſectionibus applicatas, inter vtranque aſymptoton cadit.
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<
s
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xml:space
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">Nam per ea, quæ infra demonſtrabimus, interuallum 2 1, maius eſt inter-
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uallo 1 3. </
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">Pariter 4 5, eſt maius 6 7, communique addito 5 6, erit inter-
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uallum 4 6, maius interuallo 5 7, ſiue 1 3, & </
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<
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">hoc ſemper vbicunque ſu-
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matur harum ſectionum interuallum infra applicatam 2 1 3. </
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<
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xml:space
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">Quare hy-
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perbolæ congruentes per diuerſos vertices ſimul adſcriptæ, licèt ſemper ma-
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gis accedentes, ad interuallum nunquam perueniunt æquale cuidam dato
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interuallo. </
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<
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xml:space
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<
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">EX his conſtat, congruentium Hyperbolarum non per eundem verticem
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ſimul adſcriptarum aſymptotos eſſe inter ſe æquidiſtantes, & </
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ton inſcriptæ ſecare Hyperbolen circumſcriptam.</
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<
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xml:space
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">Quod ſuperiùs promiſimus oſtendetur ſic.</
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">SInt duæ congruentes Hyperbolæ KBC, DEF, per diuerſos vertices B, E
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ſimul adſcriptæ, & </
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">circumſcriptæ KBC ſit centrum G, & </
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GI, inſcriptæ verò ſit centrum H, & </
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">aſymptotos HM, quæ ipſi GI æquidi-
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ſtabit, per præcedens Coroll. </
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aſymptoton, & </
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trum in L: </
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">dico interceptum applicatę ſegmentum AD inſcriptæ Hyperbolę
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DEF, maius eſſe intercepto eiuſdem applicatæ ſegmento IK inter aſympto-
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ton, & </
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<
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/QN4GHYBF/figures/0102-01
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Mapplicata MNO, erunt IH, IO parallelo-
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gramma, ac ideò tàm GH, quàm LO ipſi IM
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æquales erunt, & </
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muni HL, erit GL æqualis HO, ſed eſt GB
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æqualis HE, (cum ſint ſemi-tranſuerſa late-
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ra congruentium Hyperbolarum) vnde reli-
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qua BL, reliquæ EO æqualis erit, & </
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ſemi-applicata LK ſemi-applicatę ON ęqua-
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lis, ſed eſt tota LI æqualis totæ OM (cum ſint
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oppoſitæ in parallelogrammo IO) ergo reli-
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quæ KI, NM æquales erunt, ſed eſt
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maior NM, quare & </
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KI. </
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