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20190220 Q4
Author:
Franky_0219
GeoGebra
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常见四边形是否是双心四边形
第八周作业
正方形雪花图案
科赫雪花
平行線的判定
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Length of Horizontal or Vertical Line Segments 水平或鉛垂線段的長度
請做出一正三角形
面積與積分值
椭圆内光线的反射
Kumamon
Discover Topics
Sine
Pyramid
Parametric Curves
Numbers
Derivative