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圓錐截痕
Author:
洪宜慧
GeoGebra
New Resources
異分母分數減法
找出對稱軸
三位數除以一位數（二）
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
Discover Resources
等腰，角度关系
方向導數與梯度 (Gradient)
直線族
勝者即正義
二元线性规划的图解法(习题4)
Discover Topics
Similarity Transformation or Similarity
Variance
Cube
Geometric Mean
Scalene Triangles