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面积
Author:
fei liu
Topic:
Area
,
Triangles
GeoGebra
New Resources
兩位數除以一位數（一）
拼砌四邊形
球体的体积推导
四邉形 (四年級) 教師版
四邊形的特性
Discover Resources
Symmetric設計對稱圖案(兩條對稱軸)
Copy of 方格紙上畫四邊形
Rotational symmetry examples
仰角和俯角
正方体展开图的副本
Discover Topics
Trigonometry
Geometric Distribution
Curve Sketching
Sine
Upper and Lower Sum or Riemann Sum