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12-4-5-波的干涉示意-尤景汉
Author:
王翚
GeoGebra
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四邉形 (四年級) 教師版
判斷球體
畫出對稱圖形
【案例】2018年全国1卷理科12题
找出對稱軸
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PMC 2014-15 Q5
橢圓
同旁內角
圓心
基础知识
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Rectangle
Ratios
Probability
Difference and Slope
Natural Numbers