Angeli, Stefano degli, Miscellaneum hyperbolicum et parabolicum : in quo praecipue agitur de centris grauitatis hyperbolae, partium eiusdem, atque nonnullorum solidorum, de quibus nunquam geometria locuta est, parabola nouiter quadratur dupliciter, ducuntur infinitarum parabolarum tangentes, assignantur maxima inscriptibilia, minimaque circumscriptibilia infinitis parabolis, conoidibus ac semifusis parabolicis aliaque geometrica noua exponuntur scitu digna

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 |< < (148) of 232 > >|
    <echo version="1.0RC">
      <text xml:lang="la" type="free">
        <div xml:id="echoid-div126" type="section" level="1" n="81">
          <pb o="148" file="0160" n="160"/>
        </div>
        <div xml:id="echoid-div129" type="section" level="1" n="82">
          <head xml:id="echoid-head94" xml:space="preserve">PROPOSITIO XXXIX.</head>
          <p style="it">
            <s xml:id="echoid-s2718" xml:space="preserve">Datis ijſdem, quœ in antecedenti propoſitione in primo
              <lb/>
            ſehemate, datur centrum æquilibrij figuræ in
              <lb/>
            linea, quæ eſt radius rotationis.</s>
            <s xml:id="echoid-s2719" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2720" xml:space="preserve">SEd dentur eadem, quæ ſupra in primo ſchema-
              <lb/>
            te. </s>
            <s xml:id="echoid-s2721" xml:space="preserve">Dico dari in D C, quæ eſt radius rotatio-
              <lb/>
            nis, centrum æquilibrij ſemifiguræ D B C. </s>
            <s xml:id="echoid-s2722" xml:space="preserve">Cum
              <lb/>
            enim exanteced. </s>
            <s xml:id="echoid-s2723" xml:space="preserve">propoſit datis ijs, detur etiam ra-
              <lb/>
            tio cylindri ad alterum ſolidorum. </s>
            <s xml:id="echoid-s2724" xml:space="preserve">Ergo dabitur e-
              <lb/>
            tiam ratio ſolidorum ad inuicem; </s>
            <s xml:id="echoid-s2725" xml:space="preserve">nempe dabitur ra-
              <lb/>
            tio ſolidi A B C, ad ſolidum D B C H V. </s>
            <s xml:id="echoid-s2726" xml:space="preserve">Sed ex
              <lb/>
            propoſit. </s>
            <s xml:id="echoid-s2727" xml:space="preserve">4. </s>
            <s xml:id="echoid-s2728" xml:space="preserve">lib. </s>
            <s xml:id="echoid-s2729" xml:space="preserve">3. </s>
            <s xml:id="echoid-s2730" xml:space="preserve">ſolidum ad ſolidum eſt vt pars D C,
              <lb/>
            terminata à D, & </s>
            <s xml:id="echoid-s2731" xml:space="preserve">àcentro æquilibrij figuræ D B C,
              <lb/>
            ad reliquam partem D C. </s>
            <s xml:id="echoid-s2732" xml:space="preserve">Quare patet propo-
              <lb/>
            ſitum.</s>
            <s xml:id="echoid-s2733" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div130" type="section" level="1" n="83">
          <head xml:id="echoid-head95" xml:space="preserve">PROPOSITIO XL.</head>
          <p style="it">
            <s xml:id="echoid-s2734" xml:space="preserve">Fi ſecundo ſchemate datis ijſdem, & </s>
            <s xml:id="echoid-s2735" xml:space="preserve">dataratione annu-
              <lb/>
            li lati ex ſernifigura ad annulum ſtrictum eiuſdem,
              <lb/>
            dabitur prœdictum centrum.</s>
            <s xml:id="echoid-s2736" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2737" xml:space="preserve">SEd in ſecundo ſchemate, vltra data in ante-
              <lb/>
            cedenti, detur etiam ratio annuli lati
              <lb/>
            D B C Z H ℟, ad annulum ſtrictum exeadem D B C,
              <lb/>
            reuoluta circa F C. </s>
            <s xml:id="echoid-s2738" xml:space="preserve">Dico dari eius centrum </s>
          </p>
        </div>
      </text>
    </echo>