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Illusion-内凹的正方形
Author:
王彤
GeoGebra
New Resources
錐體建築師
兩組對邊相等的四邊形
算柱 (兩位數)
画直线等分三角形的面积
球体的体积推导（优化版）
Discover Resources
七巧板貓咪
對稱圖形
量角器
repetitive square
Compare areas by cutting shapes Q2
Discover Topics
Prism
Linear Regression
Cylinder
Quadrilaterals
Bar Chart or Bar Graph