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面積題 E
Author:
spkwan
GeoGebra
New Resources
算柱 (兩位數)
兩位數除以一位數（二）
小数 的副本
sanjiaohanshu
找出對稱軸
Discover Resources
國中(1-1等線段作圖)
Ex5C#15
Copy of 球面
線性規劃
gjh-g03-00 和的平方公式的副本
Discover Topics
Similar Triangles
Perimeter
Arithmetic Mean
Rational Numbers
Upper and Lower Sum or Riemann Sum