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S2I1 GGB错觉：挤出一块小空间
Author:
学用数学
GeoGebra
New Resources
畫出對稱圖形
算柱 (兩位數)
兩位數除以一位數（一）
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
Discover Resources
Roger Test Draw
有趣
直線與曲線
三角形外心
三棱锥的体积推导的副本
Discover Topics
Difference and Slope
Percentages
Hyperbola
Cuboid
Quadrilaterals