Vitruvius, M. Vitrvvivs Per Iocvndvm Solito Castigatior Factvs Cvm Figvris Et Tabvla Vt Iam Legi Et Intelligi Possit, 1511

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          <pb o="84" file="0177" n="177" rhead="NONVS."/>
          <figure number="105">
            <description xml:id="echoid-description83" xml:space="preserve">a. latera qua-
              <lb/>
            drati pedum
              <lb/>
            denũ: qui effi
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            ciunt areæ
              <lb/>
            ped. quadra-
              <lb/>
            to℞. ioo.
              <lb/>
            b. linea dia- gõia: ex qua
              <lb/>
            ſi ducat̃ qua-
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            dratum .b. c.
              <lb/>
            d.e.id erit pe
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            dum quadra
              <lb/>
            torum ducẽ-
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            torum.</description>
            <variables xml:id="echoid-variables78" xml:space="preserve">a b c d</variables>
          </figure>
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        <div xml:id="echoid-div101" type="section" level="1" n="77">
          <head xml:id="echoid-head76" xml:space="preserve">Denorma pythagoricum inuentum ex hortogonii trigo
            <lb/>
          ni deformatione. # Caput. II.</head>
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            <s xml:id="echoid-s3084" xml:space="preserve">Item pythagoras normam ſine artificis fabricationibus inuentam oſten-
              <lb/>
            dit, & </s>
            <s xml:id="echoid-s3085" xml:space="preserve">ꝗ̃ magno labore fabri normam facientes vix ad uerum perduce-
              <lb/>
            re poſſunt, Id rationibus & </s>
            <s xml:id="echoid-s3086" xml:space="preserve">methodis emendatum ex eius præceptis ex-
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            plicatur, Nan ſi ſumantur regulæ tres, e quibus una ſit pedes tres, alte-
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            ra pedes quatuor, tertia pedes quinque, hæ regule interſe compoſitæ
              <lb/>
            tangant alia aliam ſuis cacuminibus extremis ſchema habentes trigoni,
              <lb/>
            deformabunt normam emendatam, Ad eas autem regularum ſingula-
              <lb/>
            rum longitudines, ſi ſingula quadrata paribus lateribus deſcribantur,
              <lb/>
            quod erit pedum trium lat{us}, areæ habebit pedes nouem, quod erit qua-
              <lb/>
            tu or, ſexdecim, quod quin erit, uigĩtiquin. </s>
            <s xml:id="echoid-s3087" xml:space="preserve">Ita quantum areæ pedũ
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            numerum duo quadrata ex tribus pedibus longitudinis laterũ, & </s>
            <s xml:id="echoid-s3088" xml:space="preserve">qua-
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            tuor efficiunt, æque tantum numerum reddit vnum ex ꝗn deſcriptũ.</s>
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