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Author:
s2218
Topic:
Ratios
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GeoGebra
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球体的体积推导（优化版）
判斷球體
找出對稱軸
四邉形 (四年級) 教師版
第八周作业
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代數運算
平行線的斜率_hui sir
周界和面積
BkD_act15_04c
線性規劃例15
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Pythagoras or Pythagorean Theorem
Root
Median Value
Polygons
Subtraction