Commandino, Federico, Liber de centro gravitatis solidorum, 1565

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              <s id="s.000791">
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              fruſtum pyramidis ſit abſciſſum. </s>
              <s id="s.000792">erit ex iis quæ proxime
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              tradidimus, fruſti pyramidis ad centrum grauitatis l. </s>
              <s id="s.000793">Quo
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              niam igitur portiones ſpacio o minores ſunt; habebit cir
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                <figure id="id.023.01.082.1.jpg" xlink:href="023/01/082/1.jpg" number="71"/>
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              culus, uel ellipſis ab ad
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              portiones dictas
                <expan abbr="maiorẽ">maiorem</expan>
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              proportionem, quàm nl
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              ad lm. </s>
              <s id="s.000794">ſed ut circulus, uel
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              ellipſis ab ad portiones,
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              ita apb conus, uel coni
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              portio ad ſolidas portio­
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              nes, id quod ſupra demon
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              ſtratum eſt: & ut circulus
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              uel ellipſis cd ad portio­
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              nes, quæ ip ſi inſunt, ita co
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              nus, uel coni portio cpd
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              ad ſolidas ipſius portio­
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              nes. </s>
              <s id="s.000795">Quòd cum figuræ in
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              circulis, uel ellipſibus ab
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              cd deſcriptæ ſimiles ſint,
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              erit proportio circuli, uel
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              ellipſis ab ad ſuas portio
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              nes,
                <expan abbr="eadẽ">eadem</expan>
              , quæ circuli uel
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              ellipſis cd ad ſuas. </s>
              <s id="s.000796">ergo
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              conus, uel coni portio ap
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              b ad portiones ſolidas
                <expan abbr="eã-dem">ean­
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                dem</expan>
              habet
                <expan abbr="proportionẽ">proportionem</expan>
              ,
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              quam conus, uel coni por
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              tio cpd ad ſolidas ipſius
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              portiones. </s>
              <s id="s.000797">reliquum igi­
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              tur coni, uel coni portionis
                <expan abbr="fruſtũ">fruſtum</expan>
              , ſcilicet ad ad reliquas
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              portiones ſolidas in ipſo contentas eandem
                <expan abbr="proportionẽ">proportionem</expan>
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              habet, quam conus, uel coni portio apb ad ſolidas portio
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              nes: hoc eſt eandem, quam circulus, uel ellipſis ab ad por
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              tiones planas. </s>
              <s id="s.000798">quare fruſtum coni, uel coni portionis ad </s>
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          </chap>
        </body>
      </text>
    </archimedes>
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