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選擇合適的「中間人」
Author:
GeoGebra Institute of Hong Kong
Topic:
Area
GeoGebra
New Resources
四邉形 (四年級) 教師版
三位數除以一位數（一）
異分母分數減法
判斷球體
直角坐標平面上的旋轉變換
Discover Resources
橢圓之極偶 / polarity for ellipse
共垂心
三角形內心
三角柱(可側轉、上下轉)
P6 圓周02D
Discover Topics
Median Value
Perimeter
Circumcircle or Circumscribed Circle
Step Functions
Parametric Curves