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quadrilaterals 3
Author:
iedc
GeoGebra
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拼砌四邊形
兩位數加法
異分母分數減法
画直线等分三角形的面积
兩位數除以一位數(一)
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test
椭圆的参数方程
複合圖形(八)
相似三角形的判定3
異側AP-BP最大值
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Calculus
Definite Integral
Hypothesis Testing
Circle
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