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數字鐘
Author:
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
圓的切線方程
【案例】2018年全国1卷理科12题
球体的体积推导（优化版）
圓周公式的應用
【案例】圆柱体内放置一个大球六个小球
Discover Resources
Locus 軌跡(4T)
歷屆考題
多重刻度磅
PA + PB
增加數據對平均數的影響
Discover Topics
Arithmetic
Cylinder
Sphere
Inequalities
Boxplot