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外心

Author:吳淑惠

Topic:Constructions

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拼砌四邊形
直角坐標平面上的旋轉變換
三位數除以一位數（二）
第八周作业
兩位數加法

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不盡相異物的排列
congruent (SS) 2
圆锥的侧面展开图3D动画的副本
Illusion-外凸的正方形
椭圆规

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Poisson Distribution
Hypothesis Testing
Ellipse
Root
Vectors

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