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四點距離最小
Author:
陳正鴻
GeoGebra
New Resources
異分母分數減法
四邉形 (四年級) 教師版
兩位數加法
找出對稱軸
画直线等分三角形的面积
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旋轉動畫
P4周界
test
y=asin(kx+b)+c的圖形1061030
二元线性规划的图解法(习题4)
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Subtraction
Ratios
Straight Lines
Plane Figures or Shapes
Geometry