Clavius, Christoph, Geometria practica

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          <figure number="249">
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          <head xml:id="echoid-head359" xml:space="preserve">GEOMETRIÆ
            <lb/>
          PRACTICÆ
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          LIBER OCTAVVS.</head>
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        <div xml:id="echoid-div947" type="section" level="1" n="333">
          <head xml:id="echoid-head360" xml:space="preserve">Varia Theoremata, ac problemata Geometrica
            <lb/>
          demonſtrans.</head>
          <p style="it">
            <s xml:id="echoid-s15430" xml:space="preserve">VT extremam manum Geometriæ huic noſtræ practicæ impona-
              <lb/>
            m{us}, concludem{us} eam variis nonnullis Theorematib{us}, at que
              <lb/>
            problematib{us} Geometricis, tum collectis ex Geometris aliis, tum
              <lb/>
            proprio, vt aiunt, Marte excogitatis, ac demonſtratis. </s>
            <s xml:id="echoid-s15431" xml:space="preserve">Qua in
              <lb/>
            re exemplum illuſtre habem{us} in Pappo Alexandrino, qui octo totos libros con-
              <lb/>
            ſcripſit de Mathematicis collectionib{us}. </s>
            <s xml:id="echoid-s15432" xml:space="preserve">Neque vero hoc præter inſtitutum no-
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            ſtrum exiſtimare quis debet: </s>
            <s xml:id="echoid-s15433" xml:space="preserve">cum per eiuſmodi demonſtrationes Geometric{as} ſtu-
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            dioſo Lectori via multiplex aperiatur ad inueſtigand{as} ſimiles ſpeculationes in
              <lb/>
            reb{us} Geometricis: </s>
            <s xml:id="echoid-s15434" xml:space="preserve">quippe cum in iis ad exercendum ingenium ampliſſimum
              <lb/>
            campum habeat. </s>
            <s xml:id="echoid-s15435" xml:space="preserve">Eſt & </s>
            <s xml:id="echoid-s15436" xml:space="preserve">alia cauſa, quæ me ad hunc librum octauum conſcri-
              <lb/>
            bendum permouit, ne videlicet tot Theoremata, ac problemata non ſi{ne} magno
              <lb/>
            labore perueſtigata pereant, cum ad nullam Geometriæ partem magis propriè
              <lb/>
            pertineant, quam ad hanc Geometriam practicam: </s>
            <s xml:id="echoid-s15437" xml:space="preserve">præſertim quod pleraque
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            c
              <unsure/>
            orum praxes Geometric{as} pertractent. </s>
            <s xml:id="echoid-s15438" xml:space="preserve">Adde quod non pauci viri docti & </s>
            <s xml:id="echoid-s15439" xml:space="preserve">gra-
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            @es ad hunc librum perſcribendum auctores mihi, atque ſuaſores fuerunt.</s>
            <s xml:id="echoid-s15440" xml:space="preserve"/>
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          <head xml:id="echoid-head361" xml:space="preserve">THEOR. 1. PROPOS. 1.</head>
          <p>
            <s xml:id="echoid-s15441" xml:space="preserve">FIGVRA regularis circulo circumſcripta maiorem ambitum habet,
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            quam circulus.</s>
            <s xml:id="echoid-s15442" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s15443" xml:space="preserve">
              <emph style="sc">Hæc</emph>
            eſt prima propoſitio Archimedis in lib. </s>
            <s xml:id="echoid-s15444" xml:space="preserve">1. </s>
            <s xml:id="echoid-s15445" xml:space="preserve">de ſphęra & </s>
            <s xml:id="echoid-s15446" xml:space="preserve">Cylindro: </s>
            <s xml:id="echoid-s15447" xml:space="preserve">quã
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            demonſtrat, hoc aſſumpto principio.</s>
            <s xml:id="echoid-s15448" xml:space="preserve"/>
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