Cavalieri, Buonaventura, Geometria indivisibilibvs continvorvm : noua quadam ratione promota

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        <div xml:id="echoid-div15" type="section" level="1" n="14">
          <pb o="1" file="0021" n="21" rhead="GEOMETRIÆ"/>
        </div>
        <div xml:id="echoid-div16" type="section" level="1" n="15">
          <head xml:id="echoid-head22" xml:space="preserve">CAVALERII
            <lb/>
          LIBER PRIMVS.</head>
          <head xml:id="echoid-head23" style="it" xml:space="preserve">In quo præcipuè de ſectionibus Cylindricorum, &
            <lb/>
          Conicorum, nec non ſimilibus figuris quædam
            <lb/>
          element aria præmittuntur; ac aliquæ Pro-
            <lb/>
          poſitiones lemmaticæ pro ſequen-
            <lb/>
          tibus Libris oſtenduntur.</head>
          <head xml:id="echoid-head24" xml:space="preserve">DIFINITIONES.</head>
          <head xml:id="echoid-head25" xml:space="preserve">A. I.</head>
          <note position="right" xml:space="preserve">A</note>
          <p>
            <s xml:id="echoid-s235" xml:space="preserve">CVM duæ rectæ lineæ inuicem paralle-
              <lb/>
            læ aliquam tetigerint figuram pla-
              <lb/>
            nam cum illis in eodem plano con-
              <lb/>
            ſtitutam, vnumquodq;</s>
            <s xml:id="echoid-s236" xml:space="preserve">punctum con-
              <lb/>
            tactus illius vertex dicatur, & </s>
            <s xml:id="echoid-s237" xml:space="preserve">oppo-
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            ſiti vertices puncta contactuum
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            vtriuſque dictarum tangentium pa-
              <lb/>
            rallelarum ſimul comparata; </s>
            <s xml:id="echoid-s238" xml:space="preserve">quilibei
              <lb/>
            autem vertices ſemper intelligentur aſſumpti reſpectu cu-
              <lb/>
            iuſcunque rectæ lineæ dictis tangentibus æquidiſtantis,
              <lb/>
            quæ infra regula appellatur.</s>
            <s xml:id="echoid-s239" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div17" type="section" level="1" n="16">
          <head xml:id="echoid-head26" xml:space="preserve">B.</head>
          <note position="right" xml:space="preserve">B</note>
          <p>
            <s xml:id="echoid-s240" xml:space="preserve">LIneæ tangentes dicantur, oppoſitæ tangentes eiuſdem
              <lb/>
            figuræ reſpectu cuiuſcumque rectæ lineę eiſdem tan-
              <lb/>
            gentibus æquidiſtanter ductæ.</s>
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