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20190220 Q4

Author:Franky_0219

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兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
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（一）

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摸似利萨如图形
奈格爾點
curve 函數的示範
作业1
二倍角的正弦公式的证明

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Random Experiments
Pie Chart or Circle Chart
Symmetry
Polygons
Continuity

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