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Pole & Polar
Author:
Wu Xiao-Ren
GeoGebra
New Resources
拼砌四邊形
畫出對稱圖形
兩組對邊相等的四邊形
三位數除以一位數（一）
GeoGebra笔记功能体验课件
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Area of trapezoid
冷氣機的銷量
優良作品4(薇如)
圓柱動態展開圖
折纸角度探究2
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Probability
Pyramid
Trapezoid
Angles
Distributions