Archimedes, Archimedis De iis qvae vehvntvr in aqva libri dvo

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FED. COMMANDINI
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        <div type="section" level="1" n="72">
          <pb file="0130" n="130" rhead="FED. COMMANDINI"/>
          <p>
            <s xml:space="preserve">SIT cylindrus, uel cylindri po rtio a c: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">plano per a-
              <lb/>
            xem ducto ſecetur; </s>
            <s xml:space="preserve">cuius ſectio ſit parallelogrammum a b
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            c d: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">bifariam diuiſis a d, b c parallelogrammi lateribus,
              <lb/>
            per diuiſionum puncta e f planum baſi æquidiſtans duca-
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            tur; </s>
            <s xml:space="preserve">quod faciet ſectionem, in cy lindro quidem circulum
              <lb/>
            æqualem iis, qui ſunt in baſibus, ut demonſtrauit Serenus
              <lb/>
            in libro cylindricorum, propoſitione quinta: </s>
            <s xml:space="preserve">in cylindri
              <lb/>
            uero portione ellipſim æqualem, & </s>
            <s xml:space="preserve">ſimilem eis, quæ ſunt
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            in oppoſitis planis, quod nos
              <lb/>
              <anchor type="figure" xlink:label="fig-0130-01a" xlink:href="fig-0130-01"/>
            demonſtrauimus in commen
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            tariis in librum Archimedis
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            de conoidibus, & </s>
            <s xml:space="preserve">ſphæroidi-
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            bus. </s>
            <s xml:space="preserve">Dico centrum grauita-
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            tis cylindri, uel cylindri por-
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            tionis eſſe in plano e f. </s>
            <s xml:space="preserve">Si enĩ
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            fieri poteſt, fit centrum g: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">
              <lb/>
            ducatur g h ipſi a d æquidi-
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            ſtans, uſque ad e f planum.
              <lb/>
            </s>
            <s xml:space="preserve">Itaque linea a e continenter
              <lb/>
            diuiſa bifariam, erit tandem
              <lb/>
            pars aliqua ipſius k e, minor
              <lb/>
            g h. </s>
            <s xml:space="preserve">Diuidantur ergo lineæ
              <lb/>
            a e, e d in partes æquales ipſi
              <lb/>
            k e: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">per diuiſiones plana ba
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            ſibus æquidiſtantia ducãtur. </s>
            <s xml:space="preserve">
              <lb/>
            erunt iam ſectiones, figuræ æ-
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            quales, & </s>
            <s xml:space="preserve">ſimiles eis, quæ ſunt
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            in baſibus: </s>
            <s xml:space="preserve">atque erit cylindrus in cylindros diuiſus: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">cy
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            lindri portio in portiones æquales, & </s>
            <s xml:space="preserve">ſimiles ipſi k f. </s>
            <s xml:space="preserve">reli-
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            qua ſimiliter, ut ſuperius in priſmate concludentur.</s>
            <s xml:space="preserve"/>
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            <figure xlink:label="fig-0130-01" xlink:href="fig-0130-01a">
              <image file="0130-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/4E7V2WGH/figures/0130-01"/>
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