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龍騰4_1-1課例3
Author:
廖傑成
GeoGebra
New Resources
錐體建築師
兩位數除以一位數（二）
判斷球體
四邉形 (四年級) 教師版
球体的体积推导（优化版）
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點到直線距離-3 最短發生在垂直時
類正五邊形摺法
How to reconstruct a quadrilateral farm to a triangular one with the same area?
販賣部草圖
幾何作圖動畫示範的副本
Discover Topics
Probability
Matrices
Area
Rectangle
Upper and Lower Sum or Riemann Sum