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空氣柱共鳴
Author:
陳澤瑩
GeoGebra
New Resources
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
拼砌四邊形
兩位數除以一位數（二）
三位數除以一位數（二）
Discover Resources
球差曲线
立體錯覺樓梯(使用透視法會稍有差距)
數值滑桿
錯角
擲兩個硬幣的機率分布的副本
Discover Topics
Equilateral Triangles
Circle
Linear Programming or Linear Optimization
Algebra
Complex Numbers