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-s2007" xml:space="preserve">
              <pb o="111" file="0123" n="123"/>
              <figure xlink:label="fig-0123-01" xlink:href="fig-0123-01a" number="53">
                <image file="0123-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/PVNDER1Y/figures/0123-01"/>
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            propoſit. </s>
            <s xml:id="echoid-s2008" xml:space="preserve">15. </s>
            <s xml:id="echoid-s2009" xml:space="preserve">& </s>
            <s xml:id="echoid-s2010" xml:space="preserve">16. </s>
            <s xml:id="echoid-s2011" xml:space="preserve">libri 3. </s>
            <s xml:id="echoid-s2012" xml:space="preserve">habemus centra æqui-
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            libiij ſegmenti ad diametrum parabolæ cuiuſcun-
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            que, tam in baſi, quam in linea diametro parallela.
              <lb/>
            </s>
            <s xml:id="echoid-s2013" xml:space="preserve">Solum videtur nobis lectorem admonendum, cir-
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            cumſcriptis figuris parallelogrammis; </s>
            <s xml:id="echoid-s2014" xml:space="preserve">ſolidum ex
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            exceſſu parallelogrammi G D, ſupra figuram
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            A B C D, haberetale centrum grauitatis, quod ſic
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            ſecet D H, F E, parallelam, vt pars terminata
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            ad D, ſit ad partem terminatam ad H, vt nume-
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            rus annuli vnitate auctus ad vnitatem. </s>
            <s xml:id="echoid-s2015" xml:space="preserve">V.</s>
            <s xml:id="echoid-s2016" xml:space="preserve">g. </s>
            <s xml:id="echoid-s2017" xml:space="preserve">in pri-
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            m, vt 2. </s>
            <s xml:id="echoid-s2018" xml:space="preserve">ad 1. </s>
            <s xml:id="echoid-s2019" xml:space="preserve">In ſecundo vt 3. </s>
            <s xml:id="echoid-s2020" xml:space="preserve">ad 1. </s>
            <s xml:id="echoid-s2021" xml:space="preserve">Et ſic in
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            infinitum. </s>
            <s xml:id="echoid-s2022" xml:space="preserve">Ratio eſt quia A G B, eſt </s>
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