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反餘弦函數
Author:
chungYT
GeoGebra
New Resources
畫出對稱圖形
算柱 (兩位數)
兩位數加法
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
Discover Resources
沈老師等腰直角幾何題
路徑四動畫
MeArm機構模擬V.2
織布機織布機
腾讯动漫
Discover Topics
Square
Statistical Characteristics
LCM and GCD
Continuity
Linear Equations