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GeoGebra
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平行線法
Author:
CIY
GeoGebra
New Resources
拼砌四邊形
四邊形的特性
球体的体积推导（优化版）
兩位數加法
三位數除以一位數（一）
Discover Resources
因式分解測驗
GeoGebra桌機版安裝
单晨答上海鲍老师
椭圆的两条垂直切线的交点轨迹
Copy of 二面角
Discover Topics
Linear Programming or Linear Optimization
Isosceles Triangles
Stochastic Process or Random Process
Angles
Conditional Probability