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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              <pb o="131" file="0143" n="143"/>
              <figure xlink:label="fig-0143-01" xlink:href="fig-0143-01a" number="61">
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            quadraticæ. </s>
            <s xml:id="echoid-s2353" xml:space="preserve">In illa enim V X, ſic ſecatur in ℟,
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            centro grauitatis quatuor ſolidorum ſimul, vt V ℟,
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            ſit ad ℟ X, vt 3. </s>
            <s xml:id="echoid-s2354" xml:space="preserve">ad 2. </s>
            <s xml:id="echoid-s2355" xml:space="preserve">In 2. </s>
            <s xml:id="echoid-s2356" xml:space="preserve">vero vt V 2, ſit
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            ad 2 X, vt 2, ad 1, nempe vt 3, cum tertia par-
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            te, ad 1, cum duobustertijs. </s>
            <s xml:id="echoid-s2357" xml:space="preserve">Ergo qualium V X,
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            eſt 5, talium V ℟, eſt 3, & </s>
            <s xml:id="echoid-s2358" xml:space="preserve">V 2, eſt 3, cum ter-
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            sia parte; </s>
            <s xml:id="echoid-s2359" xml:space="preserve">℟ 2, tertia pars; </s>
            <s xml:id="echoid-s2360" xml:space="preserve">& </s>
            <s xml:id="echoid-s2361" xml:space="preserve">qualium V X, eſt
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            15, talium V ℟, eſt 9; </s>
            <s xml:id="echoid-s2362" xml:space="preserve">V 2, 10; </s>
            <s xml:id="echoid-s2363" xml:space="preserve">& </s>
            <s xml:id="echoid-s2364" xml:space="preserve">℟ 2, vnitas.</s>
            <s xml:id="echoid-s2365" xml:space="preserve"/>
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