Cavalieri, Buonaventura
,
Geometria indivisibilibvs continvorvm : noua quadam ratione promota
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GEOMETRIÆ
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ne ipſa linea reuoluta; </
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<
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dicetur illa, cui reuoluta ſemper manet æquidiſtans.</
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<
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<
s
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">extra cuius planum ad
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vtramuis eiuſdem partium quodcũque fit aſlumptum
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punctum, ſi ab eo ad quoduis punctum illius ambitus recta
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linea ducatur, quæ indefinitè quoq; </
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<
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">ſit producta, & </
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eiuſdem ambitum moueatur donec ipſum totum percur-
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rerit ambitum; </
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<
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compræhenditur ſuperficie deſcripta à linea, quæ reuolui-
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tur inter ambitum propoſitæ figurę, & </
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<
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clauſa, vertex, inquam ſumptus reſpectu propoſitę figuræ, vt
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probabitur. </
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baſis propoſita figura, & </
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cies deſcripta linea, quę reuoluitur, & </
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propoſitę figuræ, & </
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fruſtum dicatur; </
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">Conicularis; </
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<
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">illæ verò rectæ
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lineæ, quæ in eadem reperiuntur, quibus congruit reuolu-
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tainter verticem, & </
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tera eiuſdem Conici.</
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cum, & </
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& </
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<
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<
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rectos angulos baſibus, ſcaleni verò, cum non fue-
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rint ad rectos angulos eiſdem: </
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<
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dricorum fruſta vocabuntur, quę per plana baſibus pa-
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rallela (pro conſcis verſus ipſas baſes) ab ijſdem abſcin-
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duatur.</
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<
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">V.</
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<
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">AXis, diameter, figuræ planę, vel ſolidę, ordinatim ap-
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plicatę adeaſdem, lineæ, iuxta quas poſſunt, &</
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<
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">c.</
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