Casati, Paolo, Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae

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            <p type="main">
              <s>
                <pb xlink:href="018/01/121.jpg" pagenum="107"/>
              valde diſtans, & obſeruetur pariter angulus
                <lb/>
              CAB. </s>
              <s>Diſtantia autem BA vel ſit præcogni­
                <lb/>
              ta, vel ex tertio loco obſeruetur, vt fieri com­
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              muniter ſolet. </s>
              <s>Demum ex B obſeruetur an­
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              gulus ABC; cognitâ ſcilicet diſtantiâ ipſius
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              A puncti à vertice obſeruatoris in B, com­
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              plementum ad duos rectos dat angulum
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              ABC: erit autem indicium diſtantiæ AB
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              ſufficientis, ſi anguli CAB, CBA ſimul ſum­
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              pti minores fuerint duobus rectis. </s>
              <s>Quare in
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              triangulo ABC dato latere BA & angulis
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              adiacentibus inuenitur latus AC. </s>
              <s>Inuento
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              autem latere AC & obſeruato angulo CAD
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              in triangulo CDA rectangulo, inuenitur CD
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              quæſita terræ ſemidiameter, nec latebit
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              montis altitudo. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="note50"/>
                <emph type="italics"/>
              L. </s>
              <s>
                <lb/>
              Septima me­
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              thodus in­
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              uestigandi
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              ſemidiame­
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              trum terræ,
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              & montis
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              altitudine.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>Quod ſi locorum opportunitas ferat, vt
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              detur altitudo FE nota, ex qua obſeruari
                <lb/>
                <arrow.to.target n="note51"/>
                <lb/>
              queat angulus CED, & in monte procul poſi­
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              to liber ſit aſcenſus, donec ex A puncto per
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              E in extremum horizontem D productus ra­
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              dius efficiat angulum CAD, qui obſeruatio­
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              ne cognoſcatur; ea habemus, quæ ad inue­
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              niendam terræ ſemidiametrum, vel ad exa­
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              minandamiam inuentam ſufficiant. </s>
              <s>Intel­
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              ligatur enim ex F exire recta FG parallela ipſi
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              CA (perpendiculares ſiquidem EC, AG á
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              paralleliſmo deflectere ponimus) efformatur </s>
            </p>
          </chap>
        </body>
      </text>
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