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Twist Bottle
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陳隆期
GeoGebra
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【案例】2013年安徽高考15题
畫出對稱圖形
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
画直线等分三角形的面积
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紙飛機
祖暅之《綴術》：「緣冪勢既同，則積不容異。」
三角形的垂心
Angles in a Circle:Property 3
tan(x) = x
Discover Topics
Prism
Polygons
Power Functions
Geometric Distribution
Standard Deviation