Clavius, Christoph, Geometria practica

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          <head xml:id="echoid-head18" xml:space="preserve">GEOMETRIÆ
            <lb/>
          PRACTICÆ.
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          LIBER PRIMVS.</head>
          <head xml:id="echoid-head19" xml:space="preserve">Tria capita ad dimenſionem linearum ſum-
            <lb/>
          me neceſſaria complectens.</head>
          <p style="it">
            <s xml:id="echoid-s167" xml:space="preserve">VT magnitudinum dimenſio omnib{us} ſuis numeris ab-
              <lb/>
            ſoluta, perfectaque reddatur, tria primo hoc libro dili-
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            genter explicanda pri{us} erunt. </s>
            <s xml:id="echoid-s168" xml:space="preserve">Primum conſtruenda
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            est norma quædam variarum partium, quam non in-
              <lb/>
            congruè Inſtrumentum partium vocare poſſum{us};
              <lb/>
            </s>
            <s xml:id="echoid-s169" xml:space="preserve">quòdineo variæ partes & </s>
            <s xml:id="echoid-s170" xml:space="preserve">ad line{as} rect{as}, & </s>
            <s xml:id="echoid-s171" xml:space="preserve">ad circu-
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            los diuidendas, tum etiam ad ali{as} operationes ſiue
              <lb/>
            Geometric{as}, ſiue Aſtronomic{as} ritè perficiend{as} con-
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            tineantur. </s>
            <s xml:id="echoid-s172" xml:space="preserve">Hui{us} enim vſ{us} credi vix potest, quàm latè pateat tum in di-
              <lb/>
            metiendis magnitudinib{us} ſine numerorum multiplicatione, tum verò ma-
              <lb/>
            ximè in horologiis Solarib{us} ea ratione, quam per line{as} Tangentes in noua
              <lb/>
            horologiorum deſcriptione tradidimus, deſcribendis, & </s>
            <s xml:id="echoid-s173" xml:space="preserve">in aliis reb{us} tam
              <lb/>
            Geometricis, quam Aſtronomicis, vt ex iis, quæ capite primo hui{us} libri, & </s>
            <s xml:id="echoid-s174" xml:space="preserve">
              <lb/>
            alibitradituriſum{us}, perſpicuum fiet. </s>
            <s xml:id="echoid-s175" xml:space="preserve">Secundo loco conficiendus eſt quadrans,
              <lb/>
            in quo præter grad{us}, Minuta quoque ac Secunda (quamuis in eo deſignata
              <lb/>
            non ſint) cognoſci, ac diſcerni queant; </s>
            <s xml:id="echoid-s176" xml:space="preserve">docendumque, qua ratione idem præ-
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            ſtaripoſſit in quolibet quadrante in 90. </s>
            <s xml:id="echoid-s177" xml:space="preserve">grad{us} exquiſitè diſtributo: </s>
            <s xml:id="echoid-s178" xml:space="preserve">parteſ-
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            que centeſimæ, atque milleſimæ in recta quauis linea in pauciſſim{as} partes æ-
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            quales diuiſa dignoſcendæ ſint. </s>
            <s xml:id="echoid-s179" xml:space="preserve">Tertio atque poſtremo loco proponenda erunt,
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            acſoluenda varia problemata triangulorum recti lineorum, vt & </s>
            <s xml:id="echoid-s180" xml:space="preserve">latera eo-
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            rum, atque anguli ex quibuſdam datis, & </s>
            <s xml:id="echoid-s181" xml:space="preserve">cognitis facilè poſſunt cognoſci. </s>
            <s xml:id="echoid-s182" xml:space="preserve">
              <lb/>
            Quamuis enim eadem hæc problemata ad finem Lemmatis 53. </s>
            <s xml:id="echoid-s183" xml:space="preserve">lib. </s>
            <s xml:id="echoid-s184" xml:space="preserve">1. </s>
            <s xml:id="echoid-s185" xml:space="preserve">noſtri
              <lb/>
            Aſtrolabii expoſita ſint, tamen ne ſtudioſ{us} Lector adillud Lemmaſæpi{us}, & </s>
            <s xml:id="echoid-s186" xml:space="preserve">
              <lb/>
            non ſine moleſtia recurrere cogatur, libet ea hic repetere totidem penè ver bis,
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            quot in prædicto Lemmate præſcripta ſunt. </s>
            <s xml:id="echoid-s187" xml:space="preserve">Sedecce tria hæc, quæ
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            præmittenda eſſe dixim{us}, trib{us} capitib{us} explicata
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            ſequuntur.</s>
            <s xml:id="echoid-s188" xml:space="preserve"/>
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