DelMonte, Guidubaldo, In duos Archimedis aequeponderantium libros Paraphrasis : scholijs illustrata

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    <archimedes>
      <text>
        <body>
          <chap id="N10019">
            <p id="N1473D" type="main">
              <s id="N1476B">
                <pb xlink:href="077/01/122.jpg" pagenum="118"/>
              FDC. & ſi AD fuerit i­
                <lb/>
                <arrow.to.target n="fig61"/>
                <lb/>
              pſi DC æqualis, conus
                <lb/>
              ABC vocabit rectan­
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              gulus. </s>
              <s id="N147D0">nam vtcumquè
                <lb/>
              ducto plano per axem,
                <lb/>
                <arrow.to.target n="marg198"/>
              quod triangulum faciat
                <lb/>
              ABC; erit angulus BAC
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              ad coniverticem rectus:
                <lb/>
              ſiquidem DAC recti di
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              midius exiſtit, veluti
                <lb/>
              DAB. pari ratione ſi ED
                <lb/>
              fuerit ipſa DC minor;
                <lb/>
              erit conus EBC obtuſi
                <lb/>
              angulus:nam ducto per axem plano, habebit triangulum
                <lb/>
              EBC angulum ad verticem coni BEC obtuſum; cùm ſit
                <lb/>
                <arrow.to.target n="marg199"/>
              BEC maior BAC. exiſtenteautem FD ipſa DC maiori, co
                <lb/>
              nus FBC acutiangulus nuncupabitur; quoniam
                <expan abbr="triangulũ">triangulum</expan>
                <lb/>
              per axem FBC angulum ad verticem coni F acutum poſſide
                <lb/>
              bit; ſiquidem minor eſt BFC, quam BAC. Refert deinde,
                <lb/>
              quòd vnum〈que〉mquè
                <lb/>
              horum conorum
                <expan abbr="eo-dẽ">eo­
                  <lb/>
                dem</expan>
              modo piſci ſecue­
                <lb/>
                <arrow.to.target n="fig62"/>
                <lb/>
              runt; vt ſit rectangu­
                <lb/>
              lus conus ABC; trian
                <lb/>
              gulum verò per axem
                <lb/>
              ſit ABC. in latere au­
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              tem AC quoduis ſu­
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              matur punctum D;
                <lb/>
              ducaturquè DE ad
                <lb/>
              AC perpendicularis;
                <lb/>
              & per DE ducatur pla
                <lb/>
              num plano ABC ere
                <lb/>
              ctum, quod quidem conum ſecet, ſectio autem ſit FDG. quę
                <lb/>
              ſanè eſt ſe ctio, quæ abipſis vocatur rectanguli coni ſectio,
                <lb/>
              quippè quæ ſi intelligatur terminata recta linea FG, nuncupa
                <lb/>
              tur portio recta linea, rectanguli〈que〉 coni ſectione contenta. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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