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正方形内接等边三角形 另解
Author:
谢鹏
GeoGebra
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双心四边形
第八周作业2
折扣
科氏力 (Coriolis Force)
斐波那契螺旋弧线（表格法-可动态调节）
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旋轉一物件
陳彤恩GGB 1/24
GGB6
P4_四下_面積（一）(教師版)
負指數的計算
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Vectors
Congruence
Mathematics
Rectangle
Ellipse