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Author:
johnmayhk
GeoGebra
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兩位數除以一位數(二)
近似值:有效數字
三位數除以一位數(一)
【案例】2018年全国1卷理科12题
異分母分數減法
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正弦定理
door
直角三角形的內心與相似
三角形的概念
向量分解的副本
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General Quadrilateral
Tangent Line or Tangent
Median Line
Logic
Step Functions