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Q3-12
Author:
johnmayhk
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
算柱 (兩位數)
兩位數除以一位數（二）
異分母分數減法
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圓周
一元二次方程求根公式
平行四邊形面積
斜坡上的線與交角
公切線的引入
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Ellipse
Upper and Lower Sum or Riemann Sum
Logic
Standard Deviation
Combinatorics