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GeoGebra
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HKDSE 2015 by Mr LO WY
Author:
tcchan
GeoGebra
New Resources
Earth with coastline
sanjiaohanshu
近似值：有效數字
直角坐標平面上的旋轉變換
Fibonacci Clock
Discover Resources
集合運算
算幾不等式
找中點軌跡
推移（x 方向）的副本
单位圆与正弦函数
Discover Topics
Quadratic Functions
Means
Tangent Function
Matrices
Secant Line or Secant