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Author:
choichiheng
GeoGebra
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平行線的斜率
圓的切線方程
祖冲之的期望：内棋与外棋
圓周公式的應用
斜率的值
Discover Resources
waaachen
圓方程式
橢圓軌跡
橢圓1--同心圓法
兩位數除三位數(商>10)
Discover Topics
Hyperbola
Congruence
Set Theory
Translation
Means