Cavalieri, Buonaventura
,
Geometria indivisibilibvs continvorvm : noua quadam ratione promota
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LIBER II.
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nia quadrata, AS, ad omnia quadrata, FR, erunt vt omnia qua-
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drata, Τ β, ad omnia quadrata, 4 Σ: </
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">Eodem pacto oſtendemus om-
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nia quadrata, AS, ad omnia quadrata, GQ, elle vt omnia quadra-
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ta, Τ β, ad omnia quadrata, Λ Δ, & </
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<
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">tandem omnia quadrata, AS,
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ad omnia quadrata, LP, eſſe vt omnia quadrata, Τ β, ad omnia
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quadrata, Φ ℟, vnde, colligendo, omnia quadrata, AS, ad omnia
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quadrata parallelogrammorum, DS, FR, GQ, LP, ideſt figurę
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circumſcriptæ, erunt vt omnia quadrata, Τ β, ad omnia quadrata
<
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">Defin. @@
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lib. 10</
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parallelogrammorum, Φ ℟, Λ Δ, 4 Σ, Υ β, ideſt ad omnia quadrata
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figuræ circumicriptæ triangulo, & </
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">Ζ β, ſed omnia quadrata, AS,
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ad omnia quadrata figuræ circumſcriptæ triangulo, OES, oſtenſa
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ſunt habere maiorem rationem, quam omnia quadrata, Τ β, ad om-
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nia quadrata trianguli, & </
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<
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">Ζ β, ergo omnia quadrata, Τ β, ad om-
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nia quadrata figuræ circumſcriptæ triangulo, & </
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<
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">Ζ β, habebunt ma-
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iorem rationem, quam ad omnia quadrata trianguli, & </
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<
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xml:space
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">Ζ β, ergo
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omnia quadrata figuræ circumſcriptæ triangulo, & </
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<
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">Ζ β, minora c-
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runt omnibus quadratis trianguli, & </
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<
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">Ζ β, quod eſt abſurdum, non
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ergo omnia quadrata, AS, ad maius, quam ſint omnia quadrata
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trianguli, OES, habenteandem rationem, quam omnia quadrata,
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Τ β, ad omnia quadrata trianguli, & </
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<
s
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">Dico autem neque ad minus eiuſdem habere eandem rationem,
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ſint enim defectus adhuc omnia quadra a figurę, Ω, & </
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<
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">ſit circumſcri-
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pta triangulo, OES, figura ex parallelogrammis, LP, GQ, FR,
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DS, & </
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">al@a inſcripta ex parallelogrammis, MQ, IR, HS, com-
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poſita, ita vt omnia quadrata circumſcriptæ ſuperent omnia qua-
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drata inſcriptę minori quantitate, quam ſint omnia quadrata, Ω, er-
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go omnia quadrata trianguli, OES, ſuperabunt omnia quadrata in-
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icriptæ figuræ multo minoriquan@tate, ſunt autem omnia quadra-
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ta, AS, ad omnia quadrata trianguli, OES, detractis omnibus qua-
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drat@s, Ω, vt omnia quadrata, Τ β, ad omnia quadrata trianguli, & </
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Ζ β, ergo omnia quadrata, AS, ad omnia quadrata inſcriptæ figu-
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ræ habebunt minorem rationem, quam omnia quadrata, Τ β, ad
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omnia quadrata trianguli, & </
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β, in punctis, ℟, Δ, Σ, ſimiliter ac, OS, diuiditur in, P, Q, R, & </
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cæ@era, vt ſupra, fiant, vt habeamus figuram inſcriptam ex paralle-
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logrammis, Τ Δ, 3 Σ, 6 β, compoſitam, oſtendemus igitur, vt ſu-
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pra, omnia quadrata, AS, ad omnia quadrata figurę inſcriptę trian-
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gulo, OES, eſſe vt omnia quadrata, Τ β, ad omnia quadrata figu-
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ræ inſcriptæ triangulo, & </
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<
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">Ζ β, ſunt autem omnia quadrata, AS, ad
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omnia quadrata figuræ inſcriptæ triangulo, OES, in minori ratio-
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ne, quam ſint omnia quadrata, Τ β, ad omnia quadrata trianguli,
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& </
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