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第四組-圓冪定理
Author:
mathguo
GeoGebra
New Resources
画直线等分三角形的面积
兩組對邊相等的四邊形
柱體建築師
四邊形的特性
三位數除以一位數（二）
Discover Resources
n等分點
旋轉對稱_1_李樂雯
circle
地球儀
圓的基本性質
Discover Topics
Congruence
Differential Equation
General Quadrilateral
Tangent Line or Tangent
Means