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animation_fx
Author:
Jimmy Ma
GeoGebra
New Resources
圓的基本性質
双心四边形
平行線的判定
百分數及其應用
第三周作业效果演示
Discover Resources
小二、小三_時間（學生版）
相似三角形
例題1【凹口性分析】
angle between 2 planes 02
掷色子
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Distributions
Planes
Tangent Line or Tangent
Addition
Triangles