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waaachen
Author:
陳兪宏
求
長度
GeoGebra
New Resources
錐體建築師
球體建築師
球体的体积推导（优化版）
兩位數除以一位數（一）
畫出對稱圖形
Discover Resources
some pic
兩個圓的中點軌跡
Rounding Quiz (Combined) 小數位及有效數字：同步測驗
Question 1
正方形的邊長和周界
Discover Topics
Symmetry
Integers
Trapezium
Histogram
Linear Programming or Linear Optimization