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Author:
ho ting chit
GeoGebra
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兩組對邊相等和有直角的四邊形
算柱 (兩位數)
球體建築師
画直线等分三角形的面积
拼砌四邊形
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P53_3b
心臟線
定积分
平移中心
多动点运动
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Addition
Special Points
Exponent
Parabola
Means