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过圆上一点作切线,三步
Author:
u.jianwang
GeoGebra
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兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
兩位數除以一位數(一)
【案例】2013年安徽高考15题
拼砌四邊形
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畢氏樹
擺線
不規則區域著色
圓錐完成
Hyperbolic Paraboloid 的製作
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Sequences and Series
Quadrilaterals
Statistics
Polynomial Functions
Ellipse