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GeoGebra
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Venn Diagram (2 Sets)
Author:
徐长俊
GeoGebra
New Resources
兩組對邊相等的四邊形
畫出對稱圖形
球体的体积推导
兩位數除以一位數（二）
兩位數除以一位數（一）
Discover Resources
Addition / Subtraction of 3 Directed Numbers
四邊形四個九點圓共點(九點心)
小学奥数
三角形外心的位置
正多边形构造
Discover Topics
Geometric Distribution
Fractal Geometry
Area
Intersection
Logarithm