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HKDSE-2010SP-P1-Q13
Author:
W.L. Wong, Albert
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
常见四边形是否是双心四边形
圓的切線方程
平行線的判定
龙形曲线-分形龙2
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球差曲线
用面積逼近圓周率
聖路易拱門
旋轉方形
[洋葱] 2019河北中考25 圆与四边形
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Incircle or Inscribed Circle
Percentages
Piecewise Functions
Circle
Vectors