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Author:
3A511063李景舜
GeoGebra
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椭圆内切圆链
平行線的判定
第八周作业3
小学资源收集
第三周作业效果演示
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平行四邊形面積教材二
Brahmagupta 四邊形的構造方法
Ex5C#5
诱导公式五(90°+α)
【物理】引力波
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