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椭圆的离心率
Author:
孟宝兴
GeoGebra
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兩位數除以一位數（一）
【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
画直线等分三角形的面积
兩組對邊相等的四邊形
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Quiz on Solving Compound Inequalities 解複合不等式：測驗
商高定理
ghseh 二次函數描點法上下平移-6
perimeter
两角和的正弦公式几何证明1
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Random Experiments
Dilation
Exponential Functions
Boxplot
Integers