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Author:
bigbirdjack
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兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
拼砌四邊形
sanjiaohanshu
找出對稱軸
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Klein Bottle
平行四邊形
內輪差...
anlge at centre twice angle at circumference
Volume of pyramid
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Parametric Curves
Definite Integral
Limits
Exponential Functions
Rectangle