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三角形內心_不完美版
Author:
lihsing.zen
Topic:
Centroid or Barycenter
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
直角坐標平面上的旋轉變換
兩位數除以一位數（二）
錐體建築師
Discover Resources
Sequence指令練習(圓面積的展開)
Trapezoid1
立體圖
周界
翰林數學_2下_CH3-4_三角形的邊長關係
Discover Topics
Random Variables
Circle
Tangent Function
Quadratic Equations
Pyramid