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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五〇
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幾何原本 卷一
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xlink:href
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庚底。</
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<
s
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<
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<
s
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xml:space
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角形之丁庚、丁己、兩腰等而丁庚己、與丁己庚、兩角亦等矣。</
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<
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<
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<
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於丁庚己。</
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<
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xml:space
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">亦必小於相等之丁己庚。</
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<
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xml:space
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xml:space
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<
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<
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對戊庚己小角之戊己腰。</
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<
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">卽如第
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四圖。</
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<
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">卽如第六圖。</
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<
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線。</
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<
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<
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<
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<
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