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長方體旋轉
Author:
chen mingchuan
GeoGebra
New Resources
找出對稱軸
畫出對稱圖形
兩位數除以一位數（一）
四邊形的特性
三位數除以一位數（一）
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explore
三角函數的繪圖2-1
劉徽的「割圓術」的副本
均值不等式的一种几何证明.许兴华数学
線性估計(Linear Approximation)
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Correlation
Trapezoid
Plane Figures or Shapes
Perimeter
Differential Calculus