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Author:
xuhao
GeoGebra
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活动三：应用性质
三角函数 的副本
科氏力 (Coriolis Force)
双心四边形
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
rabbit
bkb-切割线定理
包絡橢圓
全等—正方形的旋转
两次折叠
Discover Topics
Binomial Distribution
Quadratic Functions
Integral Calculus
Vectors 2D (Two-Dimensional)
Coordinates