Euclides 歐幾里得
,
Ji he yuan ben 幾何原本
,
1966
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21
(一)
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(二)
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(三)
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(四)
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(五)
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(六)
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(七)
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(八)
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(四七
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幾何原本 卷一
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xlink:href
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<
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variables
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<
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<
s
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<
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<
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</
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<
s
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<
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">)</
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<
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xml:space
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">求作三角形先任作丁戊線。</
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<
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<
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甲為度。</
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<
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丙為度。</
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">以
<
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庚為心。</
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">其兩圜相遇。</
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庚己為底。</
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<
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圜不到子。</
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<
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<
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<
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<
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甲等。</
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<
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<
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以乙為度。</
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<
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<
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界線。</
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<
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<
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<
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處、向下作兩腰。</
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<
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<
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<
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<
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<
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