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圆锥曲线折纸操作题（教材案例）
Author:
蔡永志
Topic:
Conic Sections
,
Ellipse
,
Hyperbola
GeoGebra
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畫出對稱圖形
兩組對邊相等和有直角的四邊形
錐體建築師
【案例】2013年安徽高考15题
球體建築師
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f(x) and f(-x)
test06
fhft
上色練習
重难题组周练（1）——二次函数
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Special Points
Square
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Diagrams
Boxplot