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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            <s xml:id="echoid-s2625" xml:space="preserve">
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            circa S V. </s>
            <s xml:id="echoid-s2626" xml:space="preserve">Vnde ex æquali, habemus rationem por-
              <lb/>
            tionis fuſi ad portionem annuli. </s>
            <s xml:id="echoid-s2627" xml:space="preserve">Tertio habemus
              <lb/>
            centrum grauitatis prædictæ portionis annuli ex cit.
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            <s xml:id="echoid-s2628" xml:space="preserve">prop. </s>
            <s xml:id="echoid-s2629" xml:space="preserve">18. </s>
            <s xml:id="echoid-s2630" xml:space="preserve">lib. </s>
            <s xml:id="echoid-s2631" xml:space="preserve">4. </s>
            <s xml:id="echoid-s2632" xml:space="preserve">Ergo quartum, nempe centrum graui-
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            tatis portionis fuſi non ignorabitur.</s>
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            <s xml:id="echoid-s2634" xml:space="preserve">Sed nec in ſequenti figura, ſuppoſita ſemiparabo-
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            la E B A, ſecta duabus lineis H N, L P, diame-
              <lb/>
            tro E B, parallelis, ignorabimus centrum grauit atis
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            ſegmenti fuſi ex ſegmento intermedio H N P L.
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              <figure xlink:label="fig-0154-01" xlink:href="fig-0154-01a" number="64">
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