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SWC introduce orthocentre

Author:hksiusir

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畫出對稱圖形
柱體建築師
兩組對邊相等和有直角的四邊形
找出對稱軸
算柱 (兩位數)

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七巧板奔人2
方格紙上畫正方形3
利用Geogebra說明平行x軸與平行y軸之直線方程式性質
規律幾何圖形珠串
作業

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Perimeter
Interest Calculation
Bar Chart or Bar Graph
Conditional Probability
Sphere

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