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正四面體作業
Author:
tingyalu
GeoGebra
New Resources
sanjiaohanshu
四邉形 (四年級) 教師版
四邊形的特性
畫出對稱圖形
兩組對邊相等和有直角的四邊形
Discover Resources
測試1
包絡菱形
Single Line Deflection
數學傳播39卷4期, 平面幾何公式思考
鱼儿找食物
Discover Topics
Triangles
Arithmetic
Circumcircle or Circumscribed Circle
Cylinder
Intersection