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絕對值距離和
Author:
陳兪宏
GeoGebra
New Resources
異分母分數減法
找出對稱軸
四邊形的特性
兩位數除以一位數（一）
判斷球體
Discover Resources
垂心
商高定理\水
E-X 电势-X
分段移動
拋物線有範圍限制的極值
Discover Topics
Similarity Transformation or Similarity
Tangent Function
Random Experiments
Logarithm
Quadrilaterals