Theodosius <Bithynius>; Clavius, Christoph, Theodosii Tripolitae Sphaericorum libri tres
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          <head xml:id="echoid-head508" xml:space="preserve">CHRISTOPHORI CLAVII
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          BAMBERGENSIS E
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          SOCIETATE IESV</head>
          <head xml:id="echoid-head509" xml:space="preserve">TRIANGVLA SPHÆRICA.
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          PRÆFATIO.</head>
          <figure number="195">
            <image file="351-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/YC97H42F/figures/351-01"/>
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            <s xml:id="echoid-s11079" xml:space="preserve">XPLICATIS ijs, quæ ad
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            triangulorum rectilineorum
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            ſcientiam, qua ex angulis no-
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            tis latera, & </s>
            <s xml:id="echoid-s11080" xml:space="preserve">vicißim ex notis
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            lateribus anguli cognoſcũtur,
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            neceſſaria eſſe duximus; </s>
            <s xml:id="echoid-s11081" xml:space="preserve">reli-
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            quum eſt, vt sphæricorum etiam triangulorum
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            doctrinam, qua arcus ex cognitis angulis, et con
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            tra, anguli ex arcubus notis inquiruntur, tra-
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            damus. </s>
            <s xml:id="echoid-s11082" xml:space="preserve">Quamuis enim Menelaus, qui etiam
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            Mileus, nobilis ſcriptor, qui temporibus Traia-
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            ni Imperatoris floruit, vt auctor eſt Ptolemæus,
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              <note position="right" xlink:label="note-351-01" xlink:href="note-351-01a" xml:space="preserve">Lib. 7. Al-
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              mag. cap. 1.</note>
            acutißimos tres libros de triãgulis ſphæricis com
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            poſuerit, non tamen eius ordinem nos in hiſce no
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            ſtris sphæricis triangulis ſequemur; </s>
            <s xml:id="echoid-s11083" xml:space="preserve">propterea
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            quòd & </s>
            <s xml:id="echoid-s11084" xml:space="preserve">plurimas eius propoſitiones, licet iucun-
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            dißimæ ſint, mira{q́ue} eruditione refertæ, </s>
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