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平面几何基础 命题4
Author:
康乃心
GeoGebra
New Resources
畫出對稱圖形
異分母分數減法
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
錐體建築師
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dandan
旋转文本
十六菊
高職數學(二)1-1圓心角
圆台的侧面展开动画
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Sphere
Orthocenter
Intersection
Secant Line or Secant
Cylinder