Euclides 歐幾里得, Ji he yuan ben 幾何原本, 1966

List of thumbnails

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21 (一) 		22
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23 		24
24 (二)
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25 (三) 		26
26 (四)
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27 (五) 		28
28 (六)
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29 (七) 		30
30 (八)
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page |< < (七 [7] ) of 399 > >|
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        <div xml:id="echoid-div4" type="body" level="1" n="1">
          <div xml:id="N10950" level="2" n="1" type="chapter">
            <div xml:id="N10954" level="3" n="1" type="chapterhead">
              <div xml:id="N10C6B" level="4" n="15" type="definition" type-free="界">
                <pb n="29" file="0029" o="七" o-norm="7" rhead="幾何原本　卷一之首" xlink:href="http://libcoll.mpiwg-berlin.mpg.de/libview?url=/mpiwg/online/permanent/library/02NT95YF/pageimg&mode=imagepath&pn=29"/>
                <figure xml:id="N10C89" number="15">
                  <image file="0029-01"/>
                  <variables xml:id="N10C8A" xml:space="preserve">甲乙丙丁</variables>
                </figure>
                <p xml:id="N10C8C">
                  <s xml:id="N10C8D" xml:space="preserve">外圜線為圜之界。</s>
                  <s xml:id="N10C90" xml:space="preserve">內形為圜。</s>
                </p>
                <p xml:id="N10C93">
                  <s xml:id="N10C94" xml:space="preserve">一說。</s>
                  <s xml:id="N10C97" xml:space="preserve">圜是一形。</s>
                  <s xml:id="N10C9A" xml:space="preserve">乃一線屈轉一周。</s>
                  <s xml:id="N10C9D" xml:space="preserve">復於元處所作。</s>
                  <s xml:id="N10CA0" xml:space="preserve">如上圖甲丁線轉至乙丁。</s>
                  <s xml:id="N10CA3" xml:space="preserve">乙丁
                    <lb/>
                  轉至丙丁。</s>
                  <s xml:id="N10CA8" xml:space="preserve">丙丁又至甲丁。</s>
                  <s xml:id="N10CAB" xml:space="preserve">復元處其中形卽成圜。</s>
                </p>
              </div>
              <div xml:id="N10CAE" level="4" n="16" type="definition" type-free="界">
                <head xml:id="N10CB4" xml:space="preserve">第十六界</head>
                <p indent="-1" xml:id="N10CB6">
                  <s xml:id="N10CB8" xml:space="preserve">圜之中處。</s>
                  <s xml:id="N10CBB" xml:space="preserve">為圜心。</s>
                </p>
                <figure xml:id="N10CBE" number="16">
                  <image file="0029-02"/>
                  <variables xml:id="N10CBF" xml:space="preserve">戊甲丁乙丙</variables>
                </figure>
              </div>
              <div xml:id="N10CC1" level="4" n="17" type="definition" type-free="界">
                <head xml:id="N10CC7" xml:space="preserve">第十七界</head>
                <p indent="-1" xml:id="N10CC9">
                  <s xml:id="N10CCB" xml:space="preserve">自圜之一界作一直線。</s>
                  <s xml:id="N10CCE" xml:space="preserve">過中心至他界。</s>
                  <s xml:id="N10CD1" xml:space="preserve">為圜徑。</s>
                  <s xml:id="N10CD4" xml:space="preserve">徑分圜兩平分。</s>
                </p>
                <p xml:id="N10CD7">
                  <s xml:id="N10CD8" xml:space="preserve">甲丁乙戊圜。</s>
                  <s xml:id="N10CDB" xml:space="preserve">自甲至乙、過丙心、作一直線。</s>
                  <s xml:id="N10CDE" xml:space="preserve">為圜徑。</s>
                </p>
              </div>
              <div xml:id="N10CE1" level="4" n="18" type="definition" type-free="界">
                <head xml:id="N10CE7" xml:space="preserve">第十八界</head>
                <p indent="-1" xml:id="N10CE9">
                  <s xml:id="N10CEB" xml:space="preserve">徑線與半圜之界所作形。</s>
                  <s xml:id="N10CEE" xml:space="preserve">為半圜。</s>
                </p>
              </div>
              <div xml:id="N10CF1" level="4" n="19" type="definition" type-free="界">
                <head xml:id="N10CF7" xml:space="preserve">第十九界</head>
                <p indent="-1" xml:id="N10CF9">
                  <s xml:id="N10CFB" xml:space="preserve">在直線界中之形。</s>
                  <s xml:id="N10CFE" xml:space="preserve">為直線形。</s>
                </p>
              </div>
              <div xml:id="N10D01" level="4" n="20" type="definition" type-free="界">
                <head xml:id="N10D07" xml:space="preserve">第二十界</head>
                <p indent="-1" xml:id="N10D09">
                  <s xml:id="N10D0B" xml:space="preserve">在三直線界中之形。</s>
                  <s xml:id="N10D0E" xml:space="preserve">為三邊形。</s>
                </p>
              </div>
              <div xml:id="N10D11" level="4" n="21" type="definition" type-free="界">
                <head xml:id="N10D17" xml:space="preserve">第二十一界</head>
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