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诱导公式四(原点对称关系)
Author:
桃篮翁
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
畫出對稱圖形
兩組對邊相等的四邊形
判斷球體
三位數除以一位數(二)
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三角形重心
數字組合
特別角的三角函數值(2)
gjh-e01-02 未知數邊長的長方形
碎形
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Parallelogram
Intersection
Statistics
Straight Lines
Inequalities