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矩陣伸縮
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GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
平行線的判定
第八周作业1
正方形雪花图案
第八周作业
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扇形柱
angles sum of a triangle 2
學習單：Hilbert Curves
ｃｉｒｃｌｅ ｓｅｇｍｅｎｔ
P.4對稱
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Division
Trigonometric Functions
Fractions
Sine
Matrices