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跑馬燈
Author:
chen mingchuan
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
異分母分數減法
【案例】2018年全国1卷理科12题
拼砌四邊形
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[問題] x² + 2xy + y² + 5x + ay + b > 0
國旗(青天白日)
週長面積皆相等的不全等三角形
算柱
向外延伸的多邊形
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Area
Scatter Plot
Set Theory
Statistical Characteristics
Parametric Curves