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求一數是另一數的幾分之幾（比較）
Author:
Tong Wing Hong
GeoGebra
New Resources
近似值：有效數字
兩位數除以一位數（一）
找出對稱軸
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
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Rectangle _03
GGB4
rose
正切函數 y=Tan(x)
Copy of 周界
Discover Topics
Circumcircle or Circumscribed Circle
Rotation
Kite
Difference and Slope
Line Segment