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圆锥曲线折纸操作题（教材案例）
Author:
蔡永志
Topic:
Conic Sections
,
Ellipse
,
Hyperbola
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等的四邊形
異分母分數減法
球體建築師
畫出對稱圖形
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好玩的輪盤
給柱體一個名字 2
勝者即正義，可愛即正義~
Copy of Mjerenje obujma 4
Copy of 梯形
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Trigonometry
Polygons
Derivative
Solids or 3D Shapes
Square