Commandino, Federico, Liber de centro gravitatis solidorum, 1565

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        <body>
          <chap>
            <p type="main">
              <s id="s.000767">
                <pb xlink:href="023/01/080.jpg"/>
                <expan abbr="itemq;">itemque</expan>
              ſimilia triangula abc, efg: & acd, egh. </s>
              <s id="s.000768">
                <expan abbr="idcir-coq;">idcir­
                  <lb/>
                coque</expan>
              latera ſibi ipſis reſpondentia eandem inter ſeſe pro­
                <lb/>
              portionem ſeruant. </s>
              <s id="s.000769">Vt igitur duplum lateris ab unà
                <lb/>
              cum latere ef ad duplum lateris ef unà cum ab, ita eſt
                <lb/>
                <figure id="id.023.01.080.1.jpg" xlink:href="023/01/080/1.jpg" number="70"/>
                <lb/>
              duplum ad late­
                <lb/>
              ris una cum late­
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              re eh ad duplum
                <lb/>
              eh unà cum ad:
                <lb/>
              & ita in aliis. </s>
              <lb/>
              <s id="s.000770">Rurſus fruſtum
                <lb/>
              ag ad
                <expan abbr="pyramidẽ">pyramidem</expan>
              ,
                <lb/>
              cuius eadem eſt
                <lb/>
              baſis, & æqualis
                <lb/>
              altitudo eandem
                <lb/>
                <expan abbr="proportionẽ">proportionem</expan>
              ha
                <lb/>
              bet, quam
                <expan abbr="fruſtũ">fruſtum</expan>
                <lb/>
              lf ad
                <expan abbr="pyramidẽ">pyramidem</expan>
              ,
                <lb/>
              quæ eſt
                <expan abbr="eadẽ">eadem</expan>
              ba­
                <lb/>
              ſi, & æquali alti­
                <lb/>
              tudine: & ſimili­
                <lb/>
              ter quam lh fru­
                <lb/>
              ſtum ad pyrami­
                <lb/>
              dem, quæ ex
                <expan abbr="ea-dẽ">ea­
                  <lb/>
                dem</expan>
              baſi, & æquali
                <lb/>
              altitudine con­
                <lb/>
              ſtat. </s>
              <s id="s.000771">nam ſi inter
                <lb/>
              ipſas baſes me­
                <lb/>
              diæ proportio­
                <lb/>
              nales conſtituan
                <lb/>
              tur, tres baſes ſimul ſumptæ ad maiorem baſim in om­
                <lb/>
              nibus eodem modo ſe habebunt. </s>
              <s id="s.000772">Vnde fit, ut axes Kl,
                <lb/>
              qr, tu à punctis psx in eandem proportionem ſecen­
                <lb/>
                <arrow.to.target n="marg92"/>
                <lb/>
              tur. </s>
              <s id="s.000773">ergo linea xs per p tranſibit: & lineæ ru, sx, qt in­
                <lb/>
              ter ſe æquidiſtantes erunt. </s>
              <s id="s.000774">Itaque cum fruſti ag latera pro­</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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