Cavalieri, Buonaventura
,
Geometria indivisibilibvs continvorvm : noua quadam ratione promota
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LIBER VII.
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ipſi, SV, quod, & </
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<
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">de cæteris quibuſcunq; </
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<
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xml:space
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">ipſi, AD, parallelis in
<
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vtraque figura liquidò apparet. </
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<
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xml:id
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xml:space
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">Quod verò pars vnius figuræ, vt,
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BZ&</
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<
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">, congruat neceſſariò parti figuræ, @βΛ, & </
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<
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">non toti, dum fit
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ſuperpoſitio tali lege, quali dictum eſt, ſic demonſtrabitur. </
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<
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enim ductis quibuſcunq; </
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<
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xml:space
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">ipſi, AD, parallelis conceptæ in figuris
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ipſarum portiones, quæ erant ſibi in directum, adhuc poſt ſuper-
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poſitionem maneant ſibi in directum, illæ vero ante ſuperpoſitio-
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nem effent ex hypoteſi æquales, ergo poſt ſuperpoſitionem por-
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tiones parallelarum ipſi, AD, in figuris ſuperpoſitis conceptæ erũt
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pariter æquales, vt ex.</
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<
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">QR, ST, ſimul ſumptæ æquabuntur ipſi,
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SV, ergo niſi vtræque, QR, ST, congruant toti, SV, congruente
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parte alicui parti, vt, ST, ipſi, ST, erit, QR, æqualis ipſi, TV, &</
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<
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QR, quidem erit in reſiduo figuræ, BZ&</
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<
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in reſiduo ſiguræ, @βΛ, cu@ fit ſuperpoſitio. </
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<
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demus cuicunq; </
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<
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Z&</
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<
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">, ſuperpoſitæ, quod ſit, H℟597, reſpondere in directum ęqua-
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lem rectam lineam, quę erit in reſiduo figuræ, @βΛ, cui fit ſuper-
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poſitio, ergo ſuperpoſitione hac lege facta, cum ſupereſt aliquid
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de figura uperpoſita, quod non cadatſuper figuram, cui fitſu-
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perpoſitio, neceſſe eſt reliquæ figuræ aliquid etiam ſupereſſe, ſuper
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quod nihil ſit ſuperpoſitum. </
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parallelę, AD, conceptæ in reſiduo, vel reſiduis (quia poſſunt eſſe
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plures figuræ reſiduæ) figuræ, BZ&</
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ſpondeat in directum in reſiduo, vel reſiduis ſiguræ; </
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cta linea, manifeſtum eſt has reſiduas figuras, ſiue reſiduarum ag-
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gregata, eſſe in eiſdem parallelis, cum ergo reſidua figura, </
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