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Drag blue dots, any observation about H,G,O?
Author:
johnmayhk
GeoGebra
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異分母分數減法
四邊形的特性
三位數除以一位數（二）
兩位數除以一位數（一）
三位數除以一位數（一）
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十字交乘法
拋物線規
相關係數與迴歸直線
Homework8
外心
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Hypothesis Testing
Straight Lines
Equations
Fractions
Quadrilaterals