Commandino, Federico, Liber de centro gravitatis solidorum, 1565

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000495">
                <pb pagenum="24" xlink:href="023/01/055.jpg"/>
              los contineant. </s>
              <s id="s.000496">Dico ſolidum ab ad ſolidum ace idem ha
                <lb/>
              bere proportionem, quam axis de ad axem ef. </s>
              <s id="s.000497">Si enim
                <lb/>
              axes in eadem recta linea fuerint conſtituti, hæc duo ſoli­
                <lb/>
              da, in unum, atque idem ſolidum conuenient. </s>
              <s id="s.000498">quare ex
                <lb/>
              iis, quæ proxime tradita ſunt, habebit ſolidum ab ad ſo­
                <lb/>
              lidum ac eandem proportionem, quam axis de ad ef
                <lb/>
              axem. </s>
              <s id="s.000499">Si uero axes non ſint in eadem recta linea, demittan
                <lb/>
              tur a punctis d, ſ perpendiculares ad baſis planum, dg, fh:
                <lb/>
              & jungantur eg, eh. </s>
              <s id="s.000500">Quoniam igitur axes cum baſibus
                <lb/>
              æquales angulos continent, erit deg angulus æqualis an­
                <lb/>
                <figure id="id.023.01.055.1.jpg" xlink:href="023/01/055/1.jpg" number="47"/>
                <lb/>
              gulo feh: & ſunt
                <lb/>
              anguli ad gh re­
                <lb/>
              cti, quare & re­
                <lb/>
              liquus edg æqua
                <lb/>
              lis erit reliquo
                <lb/>
              efh: & triangu­
                <lb/>
              lum deg
                <expan abbr="triãgu-lo">triangu­
                  <lb/>
                lo</expan>
              feh ſimile. </s>
              <s id="s.000501">er­
                <lb/>
              go gd ad de eſt,
                <lb/>
              ut hf ad e: & per
                <lb/>
              mutando gd ad
                <lb/>
              hf, ut de ad cf. </s>
              <lb/>
              <figure id="id.023.01.055.2.jpg" xlink:href="023/01/055/2.jpg" number="48"/>
              <lb/>
              <s id="s.000502">Sed ſolidum ab
                <lb/>
              ad ſolidum ac
                <lb/>
              eandem propor­
                <lb/>
              tionem habet,
                <lb/>
              quam dg altitu­
                <lb/>
              do ad
                <expan abbr="altitudinẽ">altitudinem</expan>
                <lb/>
              fh. </s>
              <s id="s.000503">ergo &
                <expan abbr="ean-dẽ">ean­
                  <lb/>
                dem</expan>
              habebit,
                <expan abbr="quã">quam</expan>
                <lb/>
              axis de ad ef
                <expan abbr="axẽ">axem</expan>
              </s>
            </p>
            <p type="main">
              <s id="s.000504">Poſtremo ſint
                <lb/>
              ſolidi parallepi
                <lb/>
              peda ab, cd in </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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