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天干與地支
Author:
李春培
天干與地支
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
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行星軌跡
外资知名
angle sum of polygon
Temp file
S3 Ch4.3 例4.6b 三視圖(3D圖)
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Confidence Interval
Special Points
Quadratic Equations
Orthocenter
Hypergeometric Distribution