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形心
Author:
Jensen Wong
Topic:
Centroid or Barycenter
GeoGebra
New Resources
画直线等分三角形的面积
找出對稱軸
四邊形的特性
四邉形 (四年級) 教師版
球体的体积推导（优化版）
Discover Resources
大樂透開獎機(由小號到大號)
梯形
立體三角測量(例五)
線性規劃例6
立方体的11种展开图
Discover Topics
Frequency Distribution
Exponential Functions
Difference and Slope
Derivative
Ellipse