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面積的認識4
Author:
ylmapsstudent
GeoGebra
New Resources
判斷球體
畫出對稱圖形
画直线等分三角形的面积
兩位數除以一位數（一）
找出對稱軸
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四下_面積（一）(教師版)
Net of circular cone
Copy of 選擇合適的「中間人」
与椭圆焦点三角形外角平分线有关的轨迹.许兴华数学
动点最值问题&抛物线模型
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Rectangle
Mode
Right Triangles
General Quadrilateral
Circumcircle or Circumscribed Circle