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开关灯1
Author:
赵林
GeoGebra
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直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
異分母分數減法
畫出對稱圖形
【案例】2013年安徽高考15题
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三角形全等的理由 – 題4
捷徑問題 2
gjh-b03-01 圓與直線關係
橢圓軌跡
關燈遊戲 Lights Out Cube beta ver.
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Vectors
LCM and GCD
Kite
Probability
Root