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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(三八
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幾何原本 卷一
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為心亦如之。</
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<
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">又用法。</
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">於甲乙線上。</
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<
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<
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">於丙點、及相望處。</
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<
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於甲乙線上。</
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">或相望如前圖。</
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">或進或退、如後圖。</
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交處得丁。</
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