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S408 Penrose 階梯
Author:
学用数学
GeoGebra
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找出對稱軸
兩組對邊相等的四邊形
算柱 (兩位數)
三位數除以一位數（一）
四邊形的特性
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Locus 軌跡(3T)
優良作品2
a sin(bx+c) +d
外心
頂、棱與面
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Coordinates
Linear Regression
Polynomial Functions
Rectangle
Tangent Line or Tangent