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切線段等長
Author:
謝易達
可移動P點，檢查切線段是否等長
GeoGebra
New Resources
算柱 (兩位數)
找出對稱軸
兩組對邊相等的四邊形
判斷球體
四邊形的特性
Discover Resources
惡靈古堡保護傘
賴桑_等差數列與級數_兩數列之比例
Apollonius Problem gergonne 1
square & Triangle
河內塔 3D (Tower of Hanoi 3D)
Discover Topics
Right Triangles
Geometric Transformations
Continuity
Centroid or Barycenter
Addition