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

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          <head xml:id="echoid-head69" xml:space="preserve">ALITER.</head>
          <p>
            <s xml:id="echoid-s1608" xml:space="preserve">Quoniam tam totus cylindrus Q C, eſt triplus
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            totius coni A B C, quam ablatus cylindrus T F, eſt
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            triplus ablati coni E B F (inſcriptis prius conis in
              <lb/>
            conoidibus); </s>
            <s xml:id="echoid-s1609" xml:space="preserve">ergo & </s>
            <s xml:id="echoid-s1610" xml:space="preserve">reliquus tubus Q E L C, tri-
              <lb/>
            plus erit reliqui; </s>
            <s xml:id="echoid-s1611" xml:space="preserve">nempe differentiæ conorum. </s>
            <s xml:id="echoid-s1612" xml:space="preserve">Sed
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            ex propoſit. </s>
            <s xml:id="echoid-s1613" xml:space="preserve">4. </s>
            <s xml:id="echoid-s1614" xml:space="preserve">differentia conorum eſt æqualis diffe-
              <lb/>
            rentiæ conoideorum. </s>
            <s xml:id="echoid-s1615" xml:space="preserve">Ergo tubus erit etiam triplus
              <lb/>
            differentiæ conoideorum. </s>
            <s xml:id="echoid-s1616" xml:space="preserve">Quod&</s>
            <s xml:id="echoid-s1617" xml:space="preserve">c.</s>
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