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Author:
johnmayhk
GeoGebra
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球体的体积推导（优化版）
【案例】2013年安徽高考15题
找出對稱軸
異分母分數減法
兩組對邊相等和有直角的四邊形
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平行四邊形變奏曲III
三角形與邊上一點求正三角形
折射的現象
Expectation Value 期望值
國旗
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Histogram
Expected Value
Linear Equations
Quadratic Functions
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