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Author:
chen mingchuan
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數加法
【案例】2018年全国1卷理科12题
算柱 (兩位數)
三位數除以一位數（二）
Discover Resources
Pyramid and Cone1
corresponding angles
向外延伸的多邊形
禪繞畫
堑堵 鳖臑 阳马
Discover Topics
Dilation
Standard Deviation
Constructions
Continuity
Sphere