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铅笔画圆
Author:
fenqinyao
GeoGebra
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斜率的值
【案例】2013年安徽高考15题
双心四边形
祖冲之的期望：内棋与外棋
多邊形的面積
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數字鐘
Linear Inequalities in Two Unknowns 二元一次不等式
對稱方波
錐台
小船平移2
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Matrices
Frequency Distribution
Conic Sections
Derivative
Probability