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proof 49 黃彥淇
Author:
郭亮偉
GeoGebra
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常见四边形是否是双心四边形
百分數及其應用
龙形曲线-分形龙
第八周作业
科赫雪花
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三角形面積
clock
龍騰4_1-1講進4
北區模考多選第八題 (2014.03.06)
多重刻度磅
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Rectangle
Tangent Line or Tangent
Means
Inequalities
Line Segment