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EX3.18

Author:Pokman Cheng

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四邊形的特性
畫出對稱圖形
兩組對邊相等的四邊形
三位數除以一位數（二）
找出對稱軸

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旋梯
分2
平面直角坐标系
day01_03
以 Unit Circle 了解 Sine 的正/負的副本

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Parametric Curves
Equations
Algebra
Conic Sections
Similar Triangles

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