Euclides 歐幾里得
,
Ji he yuan ben 幾何原本
,
1966
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(一)
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(二)
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(四)
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(五)
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(六)
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(八)
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幾何原本 卷一
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丙丁戊甲、與丙丁乙戊、兩平行方形必等。</
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戊乙、與甲己、兩線亦等。</
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<
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<
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">次每減一己戊庚角形。</
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<
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戊庚丙甲、與乙己庚丁、兩無法四邊形、亦等。</
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<
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<
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丙丁乙己、兩平行方形必等。</
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