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平面鏡多次成像_for_mobile
Author:
陳澤瑩
GeoGebra
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撒针估算面积实验
比較五件物件的重量
常见四边形是否是双心四边形
第八周作业3
异形操场
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圓面積計算
color
橢圓軌跡03
直角坐標的旋轉變換
高考真题椭圆
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Geometric Transformations
Expected Value
Differential Calculus
Cone
Statistics