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Author:
Lin Ching Chieh
GeoGebra
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【案例】2013年安徽高考15题
漂亮的摇摆曲线
多邊形的面積
三角函数 的副本
直線的斜率
Discover Resources
Area of Trapezium
cvcvxcvxcvxcv
正弦定理
Apollonius Problem 5 CPP Inversion
Distributive Law 2 (分配率 2)