Valerio, Luca, De centro gravitatis solidorum, 1604

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            <p type="main">
              <s>
                <pb xlink:href="043/01/121.jpg" pagenum="34"/>
              quat, centrum grauitatis vtriuſque abſciſsi priſ­
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              matis tamquam vnius magnitudinis rectam line­
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              lam, quæ prædicti priſmatis parallelorum paral
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              lelogrammorum centra iungit, ita diuidit, vt
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              pars, quæ minus parallelogrammum attingit ſit
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              dupla reliquæ. </s>
            </p>
            <p type="main">
              <s>Sit priſma ABCDEFGH, cuius baſes oppoſitæ tra­
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              pezia ADHE, BCGF. </s>
              <s>Sint autem AD, EH, paral­
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              lelæ, quarum maior EH. </s>
              <s>Oppoſita igitur parallelogram­
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              ma AC, EG, inter ſe erunt parallela, quorum maius EG.
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              </s>
              <s>At per rectas AB, CD, ſectum ſit priſma. </s>
              <s>ABCDEF
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              GH, ita vt abſciſſa priſmata ABSFER, CDVHGT,
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              relinquant parallelepipedum AT, ipſum autem AT, re­
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              linquat duo parallelogramma æqualia ES, TH. </s>
              <s>Poſito
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              autem centro K
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              parallelogrammi
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              AC, & L, paral
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              lelogrammi EG,
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              iunctaque KL,
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              ponatur KM, du
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              pla ipſius ML.
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              </s>
              <s>Dico
                <expan abbr="duorũ">duorum</expan>
              priſ­
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              matum BER,
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              CVH, ſimul cen
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              trum grauitatis
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                <figure id="id.043.01.121.1.jpg" xlink:href="043/01/121/1.jpg" number="93"/>
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              eſse M. </s>
              <s>Sectis enim AB, CD, bifariam in punctis P, Q,
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              ſumptiſque parallelogrammorum ES, VG, centris N, O,
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              iungantur PN, QO, & poſita PX dupla ipſius XN, & QZ
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              dupla ipſius ZO, iungantur rectæ PKQ, XZ, NO.
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              </s>
              <s>Quoniam igitur in quadrilatero PQON, recta XZ, pa­
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              rallela eſt vtrilibet ipſarum PQ, NO, ſecat ijs parallelis
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              interceptas in eaſdem rationes; recta igitur XT per pun-</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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