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優良作品4
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩位數加法
【案例】2013年安徽高考15题
拼砌四邊形
球体的体积推导（优化版）
兩組對邊相等和有直角的四邊形
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垂足三角形
...
複合棒形圖2
國旗
P.5 面積問題04
Discover Topics
Conditional Probability
Frequency Distribution
Trapezoid
Normal Distribution
Calculus