Clavius, Christoph, Geometria practica
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              <pb o="62" file="092" n="92" rhead="GEOMETR. PRACT."/>
            tam angulus N L I complementi maioris anguli obſeruationis, quam angulus
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            NLK, complementi minoris anguli obſeruationis, &</s>
            <s xml:id="echoid-s2470" xml:space="preserve">c. </s>
            <s xml:id="echoid-s2471" xml:space="preserve">Reliqua autem fiant, vt
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            in problemate 1. </s>
            <s xml:id="echoid-s2472" xml:space="preserve">Num. </s>
            <s xml:id="echoid-s2473" xml:space="preserve">6. </s>
            <s xml:id="echoid-s2474" xml:space="preserve">& </s>
            <s xml:id="echoid-s2475" xml:space="preserve">8. </s>
            <s xml:id="echoid-s2476" xml:space="preserve">dictum eſt. </s>
            <s xml:id="echoid-s2477" xml:space="preserve">Idemque efficies per ea, quæ Num. </s>
            <s xml:id="echoid-s2478" xml:space="preserve">7.
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            </s>
            <s xml:id="echoid-s2479" xml:space="preserve">in eodem problemate 1. </s>
            <s xml:id="echoid-s2480" xml:space="preserve">ſcripſimus.</s>
            <s xml:id="echoid-s2481" xml:space="preserve"/>
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            <s xml:id="echoid-s2482" xml:space="preserve">EX vertice montis, vel turris per duas ſtationes in aliqua haſta erecta,
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            vel in duabus feneſtris turris, quarum vna ſupra aliam exiſtat, factas,
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            è quibus ſignum aliquod in Horizonte videri poſſit, altitudinem
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            ipſius montis, aut turris metiri. </s>
            <s xml:id="echoid-s2483" xml:space="preserve">Atque hinc diſtantiam quoque à
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            perpendiculo montis, vel turris vſque ad ſignum viſum cogno-
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            ſcere.</s>
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        <div xml:id="echoid-div145" type="section" level="1" n="62">
          <head xml:id="echoid-head65" xml:space="preserve">PROBLEMA IV.</head>
          <p>
            <s xml:id="echoid-s2485" xml:space="preserve">@. </s>
            <s xml:id="echoid-s2486" xml:space="preserve">
              <emph style="sc">Non</emph>
            poſſunt aliquando commodè duæ ſtationes in ſummitate montis,
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            vel turris fieri. </s>
            <s xml:id="echoid-s2487" xml:space="preserve">Quare tunc ita agendum erit. </s>
            <s xml:id="echoid-s2488" xml:space="preserve">Sit altitu-
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              <figure xlink:label="fig-092-01" xlink:href="fig-092-01a" number="26">
                <image file="092-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/092-01"/>
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            do A B, ſupra planum BC, menſuranda ex ſummitate
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            A. </s>
            <s xml:id="echoid-s2489" xml:space="preserve">Erigatur haſta aliqua quotlibet palmorum, aut pe-
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            dum. </s>
            <s xml:id="echoid-s2490" xml:space="preserve">Et primum inſpiciatur ſignum C, in plano per an-
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            gulum B D C; </s>
            <s xml:id="echoid-s2491" xml:space="preserve">Deinde idem inſpiciatur ex loco ſupe-
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            riore haſtæ per angulum BEC. </s>
            <s xml:id="echoid-s2492" xml:space="preserve">Vterque autem angulus
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            ob ſeruabitur vel per quadrantem pendulum, vt in prio-
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            ri angulo vides, vel per ſtabilem cum dio ptra, vt in po-
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            ſteriori. </s>
            <s xml:id="echoid-s2493" xml:space="preserve">Sumptis quo que æqualibus DF, EG, pro ſinu-
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            bus totis, ducantur ad EB, perpendiculares F H, G I,
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            pro Tangentibus angulorum obſeruationum. </s>
            <s xml:id="echoid-s2494" xml:space="preserve">Ducta
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            autem DL ipſi E C, parallela ſecante F H, in K: </s>
            <s xml:id="echoid-s2495" xml:space="preserve">
              <note symbol="a" position="left" xlink:label="note-092-01" xlink:href="note-092-01a" xml:space="preserve">29. primi.</note>
            niam anguli BDL, & </s>
            <s xml:id="echoid-s2496" xml:space="preserve">E, æquales ſunt, & </s>
            <s xml:id="echoid-s2497" xml:space="preserve">F, G, recti, nec
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            non & </s>
            <s xml:id="echoid-s2498" xml:space="preserve">latera adia centia DF, EG, æqualia: </s>
            <s xml:id="echoid-s2499" xml:space="preserve"> erunt
              <note symbol="b" position="left" xlink:label="note-092-02" xlink:href="note-092-02a" xml:space="preserve">26. primi.</note>
            ra F K, GI, æqualia: </s>
            <s xml:id="echoid-s2500" xml:space="preserve">atque adeo K H, differentia Tangentium. </s>
            <s xml:id="echoid-s2501" xml:space="preserve">Quia vero ex
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            ſchol. </s>
            <s xml:id="echoid-s2502" xml:space="preserve">propoſitionis 4. </s>
            <s xml:id="echoid-s2503" xml:space="preserve">lib. </s>
            <s xml:id="echoid-s2504" xml:space="preserve">6. </s>
            <s xml:id="echoid-s2505" xml:space="preserve">Euclid. </s>
            <s xml:id="echoid-s2506" xml:space="preserve">eſt, vt KH, ad FK, ita LC, ad BL: </s>
            <s xml:id="echoid-s2507" xml:space="preserve"> Vt
              <note symbol="c" position="left" xlink:label="note-092-03" xlink:href="note-092-03a" xml:space="preserve">2. ſexti.</note>
            LC, ad BL, ita eſt, ED, ad BD; </s>
            <s xml:id="echoid-s2508" xml:space="preserve">erit quo que vt KH, ad FK, ita ED, ad DB. </s>
            <s xml:id="echoid-s2509" xml:space="preserve">Siigi-
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            tur fiat,</s>
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          <note style="it" position="right" xml:space="preserve">
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          Vt KH, differentia \\ inter Tangent{es} \\ angulorum ob- \\ ſeruationum # ad FK, vel ad \\ G I, Tan- \\ gentem mi- \\ norem: # Ita E D, ſpatium inter angulos obſer- \\ uationum, quod notum eſſe potest \\ per aliquam menſuram, # ad D B,
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          </note>
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            <s xml:id="echoid-s2510" xml:space="preserve">inuenietur D B, ex qua ſi dematur portio haſtæ A D, inter altitudinis faſti-
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              <note position="left" xlink:label="note-092-05" xlink:href="note-092-05a" xml:space="preserve">Altitudinis
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              inuentio.</note>
            gium A, & </s>
            <s xml:id="echoid-s2511" xml:space="preserve">inferiorem angulum obſeruationis D, nota relinquetur altitudo pro-
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            poſita A B.</s>
            <s xml:id="echoid-s2512" xml:space="preserve"/>
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            <s xml:id="echoid-s2513" xml:space="preserve">
              <emph style="sc">Eodemqve</emph>
            modo in turri eadem altitudo deprehendetur, ſi pro haſta
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            A E, duæ feneſtræ eligantur, è quibus ſignum C, ſub iiſdem angulis videatur, vt
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            patet. </s>
            <s xml:id="echoid-s2514" xml:space="preserve">Sed tunc altitudini D B, inuentæ (ſi feneſtræ ſint D E,) adiicienda eſt por-
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            tio turris inter punctum D, feneſtræ inferioris, & </s>
            <s xml:id="echoid-s2515" xml:space="preserve">turris faſtigium E, vt tota alti-
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            tudo turris habeatur E B. </s>
            <s xml:id="echoid-s2516" xml:space="preserve"> Et ſi fiat,</s>
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          <note symbol="d" position="left" xml:space="preserve">4. ſexti.</note>
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