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若隐若现额白点
Author:
数豆豆
GeoGebra
New Resources
百分數及其應用
双心四边形
圓周公式的應用
祖冲之的期望：内棋与外棋
圓的基本性質
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平移動畫（平移加滑桿）
褶正三角形
Copy of 以剪貼比較圖形大小 題1
椭圆内部全等的双椭圆构造.许兴华数学
S3 Ch4.1 立體圖形(3D圖) - 十字形棱柱(ViewB)
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Multiplication
Centroid or Barycenter
Linear Programming or Linear Optimization
Numbers
Pythagoras or Pythagorean Theorem