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椭圆的光学性质
Author:
孟宝兴
GeoGebra
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判斷球體
近似值：有效數字
異分母分數減法
【案例】2018年全国1卷理科12题
拼砌四邊形
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soccer
P6 圓周03D
頂點法
文繞圖2
椭圆与圆的关系的副本
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Quadrilaterals
Distributions
Bar Chart or Bar Graph
Natural Numbers
Cube