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Author:
王正豪
GeoGebra
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異分母分數減法
近似值：有效數字
兩位數加法
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
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公切線的條數
中線定理(阿波羅尼奧斯)定理
三角比一
perimeter
Angle of elevation and Angle of depression(仰角和俯角)
Discover Topics
Logarithm
Derivative
Inequalities
Function Graph
Symmetry