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極線獨立定理 / polar independence theorem
Author:
XIE Yuheng
若以兩種方式構造極線 則兩次所作的極線相重 即 此種構造方式保持等詞 因而 此種構造方式屬函數
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找出對稱軸
判斷球體
算柱 (兩位數)
異分母分數減法
兩組對邊相等的四邊形
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橢圓之極偶 / polarity for ellipse
Apollonius Problem gergonne
p05 eqidistant from two lines
Shoot Game
组合体的表面积1
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Volume
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Cube
Parallelogram