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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rhead
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幾何原本 卷二
"
xlink:href
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卯罄折形。</
s
>
<
s
xml:id
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xml:space
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">與甲壬等。</
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<
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<
s
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xml:space
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">本與丙戊直角方形等也。</
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>
<
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">卽甲壬、癸庚、兩形幷。</
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<
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xml:space
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<
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等也。</
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<
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xml:space
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<
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<
s
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">注曰。</
s
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<
s
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">以數明之。</
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<
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">兩平分之。</
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<
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<
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">又引增二。</
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>
<
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">共十二。</
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>
<
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">二乘之為二十四、及五之冪二十五。</
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>
<
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xml:id
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之冪四十九、等。</
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<
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">第七題</
head
>
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indent
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-1
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<
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<
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">任兩分之。</
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>
<
s
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xml:space
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">其元線上、及任用一分線上、兩直角方形、幷。</
s
>
<
s
xml:id
="
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"
xml:space
="
preserve
">與元線偕一分線、矩內直角形二、及分餘
<
lb
/>
線上直角方形幷、等。</
s
>
</
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>
<
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<
s
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">解曰。</
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>
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">甲乙線。</
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>
<
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">任分於丙。</
s
>
<
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="
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">題言元線甲乙上、及任用一分線如甲丙上。</
s
>
<
s
xml:id
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="
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">兩直角方形、幷。</
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>
<
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xml:space
="
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">(</
s
>
<
s
xml:id
="
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"
xml:space
="
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">不論甲丙為長分、為短分。</
s
>
<
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xml:id
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xml:space
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">)</
s
>
<
s
xml:id
="
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"
xml:space
="
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">與甲
<
lb
/>
乙偕甲丙、矩內直角形二、及分餘線丙乙上直角方形幷、等。</
s
>
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