Valerio, Luca, De centro gravitatis solidorvm libri tres

Table of figures

< >
[Figure 11]
[Figure 12]
[Figure 13]
[Figure 14]
[Figure 15]
[Figure 16]
[Figure 17]
[Figure 18]
[Figure 19]
[Figure 20]
[Figure 21]
[Figure 22]
[Figure 23]
[Figure 24]
[Figure 25]
[Figure 26]
[Figure 27]
[Figure 28]
[Figure 29]
[Figure 30]
[Figure 31]
[Figure 32]
[Figure 33]
[Figure 34]
[Figure 35]
[Figure 36]
[Figure 37]
[Figure 38]
[Figure 39]
[Figure 40]
< >
page |< < of 283 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <pb xlink:href="043/01/052.jpg" pagenum="44"/>
            <p type="head">
              <s>
                <emph type="italics"/>
              PROPOSITIO XXI.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>Omnis polygoni æquilateri, & æquianguli
                <lb/>
              idem eſt centrum grauitatis, & figuræ. </s>
            </p>
            <p type="main">
              <s>Sit polygonum æquilaterum, & æquiangulum ABC
                <lb/>
              DEFG, cuius ſit primo laterum numerus impar, centrum
                <lb/>
              autem ſit L. </s>
              <s>Dico punctum L, eſse centrum grauitatis
                <lb/>
              polygoni ABCDEFG; ſectis enim duobus lateribus
                <lb/>
              DE, FG, bifariam in punctis K, H, ducantur ab angulis
                <lb/>
              oppoſitis rectæ AH, CK. & rectæ BMG, CNF, CM,
                <lb/>
              MF, iungantur. </s>
              <s>Quoniam igitur ex decima tertia quar
                <lb/>
              ti Elem. quemadmodum in pentagono, ita in omni præ­
                <lb/>
              dicto polygono imparium multitudine laterum plane col­
                <lb/>
              ligitur centrum po­
                <lb/>
              lygoni eſse in qua­
                <lb/>
              libet recta, quæ ab
                <lb/>
              angulo ad medium
                <lb/>
              lateris oppoſiti du­
                <lb/>
              citur, quoniam ab
                <lb/>
              omnibus angulis ſic
                <lb/>
              ductæ ſecant ſe ſe
                <lb/>
              in eadem proportio­
                <lb/>
              ne æqualitatis, ita
                <lb/>
              vt eadem ſit propor
                <lb/>
              tio ſegmentorum,
                <lb/>
              quæ ad angulos, ad
                <lb/>
              ea, quæ ad latera
                <lb/>
                <figure id="id.043.01.052.1.jpg" xlink:href="043/01/052/1.jpg" number="30"/>
                <lb/>
              illis angulis oppoſita; rectæ AH, CK, ſecabunt ſe ſe in
                <lb/>
              puncto L. </s>
              <s>Rurfus quoniam ex eadem Euclidis angulus
                <lb/>
              BAL, æqualis eſt angulo GAL, ſed AB, eſt æqualis
                <lb/>
              AG, & AM, communis, erit baſis BM, æqualis baſi </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>