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國徽
Author:
sn00151200
GeoGebra
New Resources
兩位數除以一位數（一）
垂直線的斜率
祖冲之的期望：内棋与外棋
異分母分數減法
漂亮的摇摆曲线
Discover Resources
方格紙上畫四邊形
分割
摺紙模板
光的反射
周界-平移法(練習二)
Discover Topics
Arithmetic Mean
Ellipse
Mode
Linear Programming or Linear Optimization
Secant Line or Secant