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="11" file="0023" n="23"/>
              <figure xlink:label="fig-0023-01" xlink:href="fig-0023-01a" number="9">
                <image file="0023-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/PVNDER1Y/figures/0023-01"/>
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            ceſſus ſæpe dicti ſint æquales inter ſe tam ſecundum
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            totum, quam ſecundum partes proportionales, ſe-
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            quitur conſequenter iuxta doctrinam præcit. </s>
            <s xml:id="echoid-s278" xml:space="preserve">4. </s>
            <s xml:id="echoid-s279" xml:space="preserve">lib.
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            <s xml:id="echoid-s280" xml:space="preserve">eſſe quantitates proportionaliter analogas tam ſe-
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            cundum magnitudinem, quam ſecundum grauita-
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            tem. </s>
            <s xml:id="echoid-s281" xml:space="preserve">Quare ex propoſit. </s>
            <s xml:id="echoid-s282" xml:space="preserve">13. </s>
            <s xml:id="echoid-s283" xml:space="preserve">eiuſdem libri, centra
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            grauitatis horum exceſſuum ſecabunt B D, eodem
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            pacto. </s>
            <s xml:id="echoid-s284" xml:space="preserve">Cum ergo centrum grauitatis differentiæ co-
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            norum, quodſit v. </s>
            <s xml:id="echoid-s285" xml:space="preserve">g. </s>
            <s xml:id="echoid-s286" xml:space="preserve">L, ſic ſecet B D, vt B L, fit
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            tripla L D (nam idem eſt centrum grauitatis ex-
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            ceſſus prædicti, & </s>
            <s xml:id="echoid-s287" xml:space="preserve">conorum A B C, E B F). </s>
            <s xml:id="echoid-s288" xml:space="preserve"/>
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