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Equality of Ratios
Author:
Lam Yat Chun
GeoGebra
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双心四边形
圓的基本性質
直線的斜率：水平變化 & 鉛垂變化
撒针估算面积实验
圓周公式的應用
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線性規劃
平行線 (同位角 - 4對)
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動畫初階練習1(平移)
圓周公式應用題2的副本
Discover Topics
Isosceles Triangles
Limits
Pythagoras or Pythagorean Theorem
Quadrilaterals
Equilateral Triangles