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椭圆的定义

Author:guomenglin

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【案例】2013年安徽高考15题
找出對稱軸
兩組對邊相等和有直角的四邊形
拼砌四邊形
算柱 (兩位數)

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因數的判別
glt-c02-09 五角柱旋轉
織布機織布機
量角器3
空間線性組合

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Scatter Plot
Conic Sections
Boxplot
Calculus
Geometry

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