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proof24 羅文頡
Author:
郭亮偉
GeoGebra
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三位數除以一位數（一）
拼砌四邊形
異分母分數減法
錐體建築師
球體建築師
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正八面體
GriffithsTheorem
y=sinx+1,y=2sinx,y=sin2x的圖形
Quiz on Discriminant 判別式：測驗
Light reflected in hyperbola
Discover Topics
Rotation
Linear Regression
Sequences and Series
Straight Lines
Quadratic Equations