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Author:
俞光隆
GeoGebra
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四邉形 (四年級) 教師版
四邊形的特性
【案例】2013年安徽高考15题
球体的体积推导(优化版)
第八周作业
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賺賠:例2
三角形的邊長關係
task2
格子點
對稱圖
Discover Topics
Set Theory
Matrices
Subtraction
Probability
Linear Programming or Linear Optimization