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Author:
Wong Ka Leong
GeoGebra
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常见四边形是否是双心四边形
圓的基本性質
第八周作业2
异形操场
撒针估算面积实验
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四点共圆
托勒密定理推廣到任意四邊形二
P6 圓周03B
circle
空间立方体
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Quadrilaterals
Derivative
Definite Integral
Distributions
Statistical Characteristics