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百葉窗
Author:
李春培
GeoGebra
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祖冲之的期望：内棋与外棋
平行線的斜率
斜率的值
圓周公式的應用
圓的基本性質
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斯霍滕(Schooten)定理(與角平分線定理等價)
立面化設計基礎-角錐及展開圖
Locus: P equidistant from two fixed points
直角座標轉為極座標
內外角平分線的副本
Discover Topics
Logarithm
Inequalities
Reflection
Mode
Percentages