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平移法（三）
Author:
jocelyntam
,
Choy Wai Yan
Topic:
Perimeter
GeoGebra
New Resources
Nested spiral octagon
Earth with coastline
算柱 (兩位數)
四邉形 (四年級) 教師版
畫出對稱圖形
Discover Resources
立體幾何
畫三角形 題2e
不規則圖形的周界(step3)
五形面體 序
变化的幂函数.许兴华数学
Discover Topics
Set Theory
Tangent Line or Tangent
Symmetry
Binomial Distribution
Pie Chart or Circle Chart