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優良作品2
Author:
Ching-Hui Chou
GeoGebra
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直角坐標平面上的旋轉變換
算柱 (兩位數)
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
三位數除以一位數（二）
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折扣 例1
Fundamental theorem of curves
f(x, y) = g(x) h(y)
CIRCLE
Copy of cos, sin 與單位圓
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Equations
Perimeter
Addition
Standard Deviation
Area