Cavalieri, Buonaventura
,
Geometria indivisibilibvs continvorvm : noua quadam ratione promota
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LIBER II.
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abſciſſarum, BM, adiuncta, MZ, & </
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<
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xml:space
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">omnes lineas, BO, æquari ma-
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ximis abſciſſarum, BM, adiuncta, ME, & </
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<
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xml:space
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">omnes lineas trapezij, A
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HNC, æquari omnibus abſciſſis, BM, adiuncta, MZ, & </
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<
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trapezij, BMNC, æquari omnibus abſciſſis ipſius, BM, adiuncta, M
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E, quorum exemplum patere poteſt in recta, HO, in qua, HO, æquatur
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ipſi, BZ, &</
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<
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<
s
xml:id
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xml:space
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">, MN, ipſi, ME, æquari autem ſu-
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pradicta ſic intellige, vt ſemper cuilibet aſſumptæ in parallelogrammo,
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AO, reperiatur ſibi æqualis reſpondens in recta, BZ, & </
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<
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xml:space
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">ſic cuilibet aſ-
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ſumptæ in trapezijs iam dictis, reperiatur illi æqualis correſpondens in
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recta, BZ, quæ erit vna abſciſſarum, BM, adiuncta, MZ, vel, ME,
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ea nempè, que terminatur ad idem punctum, per quod tranſit ea, quæ
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æquidiſtat ipſi, DF, & </
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<
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">cum eadem comparata illi reperitur æqualis (ſic
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autem intellige in cæteris, cum dicimus omnes lineas alicuius figuræ,
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quæ eſt parallelogrammum, vel trapezium, vel triangulum æquari om-
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nibus abſciſſis, vel maximis, vel reſiduis omnium abſciſſarum alicuius
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lineæ, adiuncta, vel non adiuncta aliqua linea.) </
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<
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maximis abſciſſarum, BM, adiuncta, MZ, & </
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<
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">ſub maximis abſciſſarum,
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BM, adiuncta, ME, ad rectangula ſub omnibus abſciſſis, BM, adiun-
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cta, MZ, & </
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">ſub omnibus abſciſſis, BM, adiuncta, ME, erunt vt re-
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ctangulum ſub, HO, OM, ideſt ſub, ZB, BE, ad rectangulum ſub, H
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O, MN, vnà cum rectangulo ſub compoſita ex, {1/2}, HM, &</
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& </
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ſub compoſita ex, {1/2}, ZE, &</
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<
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">EXpoſita adhuc antecedentis Theorematis figura, ſi ipſi,
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EF, ad punctum, F, iungatur in directum quædam re-
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cta linea, vt, FS, & </
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<
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">compleatur parallelogrammum, FR, re-
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gula ſumpta, DS, oſtendemus rectangula ſub, AE, ER, ad
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rectangula ſub trapezijs, ADEC, CESR, eſſe vt rectan-
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gulum, DES, ad rectangulum ſub, DE, & </
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<
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F, &</
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{1/6}, EF, &</
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">Rectangula enim ſub, AE, ER, ad rectangula ſub, AE, & </
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26. huius.</
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pezio, CESR, ſunt vt, ER, ad trapezium, CESR, .</
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ad, SF, cum, {1/2}, FE, .</
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">tumpta, DE, communi altitudine, vt re-
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5. huius.</
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ctangulum, DES, ad rectangulum ſub, DE, & </
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SF, &</
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