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Author:
张书真
GeoGebra
New Resources
中华人民共和国国旗
撒针估算面积实验
三角函数 的副本
科氏力 (Coriolis Force)
活动三：应用性质
Discover Resources
任意角的三角比
circuit
Compare areas by cutting shapes Q3
纏繞SEQUENCE任意多邊版
圆面积应用
Discover Topics
Planes
Tangent Function
Rectangle
Dilation
Coordinates