Viviani, Vincenzo, De maximis et minimis, geometrica divinatio : in qvintvm Conicorvm Apollonii Pergaei

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            natim ductę DE ęquidiſtans. </s>
            <s xml:id="echoid-s389" xml:space="preserve">Patet hic ipfam FL ſectionem contingere in L, F
              <unsure/>
              <lb/>
            per 17. </s>
            <s xml:id="echoid-s390" xml:space="preserve">primi conic. </s>
            <s xml:id="echoid-s391" xml:space="preserve">(quæ huic aptè præponi poterat, cum ipſa, ope tan-
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            tum præcedentium ſeptimæ, & </s>
            <s xml:id="echoid-s392" xml:space="preserve">decimæ eiuſdem Librl
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            demonſtretur). </s>
            <s xml:id="echoid-s393" xml:space="preserve">Su-
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            matur præterea in ſectione quodlibet punctum M, per quod agatur MN
              <lb/>
            æquidiſtans ipſi DE, vel FL, & </s>
            <s xml:id="echoid-s394" xml:space="preserve">producta conueniat in prima figura cum LV
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            parallela ad FG, in reliquis verò cum iuncta HL in X; </s>
            <s xml:id="echoid-s395" xml:space="preserve">& </s>
            <s xml:id="echoid-s396" xml:space="preserve">per L, X ipſi F N
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            æquidiſtantes ducantur LO, XP. </s>
            <s xml:id="echoid-s397" xml:space="preserve">Dico lineam MN poſſe rectangulum ſub
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            FN, & </s>
            <s xml:id="echoid-s398" xml:space="preserve">NO
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            , quod quidem adiacet lineæ quarto loco inu
              <unsure/>
            entæ FL, latitudinẽ
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            habens FN in prima figura, in ſecunda verò prædictum
              <unsure/>
            rectangulum exce-
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            dens, & </s>
            <s xml:id="echoid-s399" xml:space="preserve">in tertia, & </s>
            <s xml:id="echoid-s400" xml:space="preserve">quarta ab eo deficiens rectangulo ſub LO, & </s>
            <s xml:id="echoid-s401" xml:space="preserve">OX ſimili
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            ei, quod ſub HF, & </s>
            <s xml:id="echoid-s402" xml:space="preserve">FL continetur.</s>
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