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Author:
李政憲
GeoGebra
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四邊形的特性
【案例】2018年全国1卷理科12题
兩位數加法
直角坐標平面上的旋轉變換
小数 的副本
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Testing 20170308
拋物線4-平行四邊形法
伍四红 圆与正方形 面积同周长比较
正方形的邊長和周界
漂亮的摇摆曲线
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Fractal Geometry
Trigonometry
Definite Integral
Differential Equation
Addition