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心電感應
Author:
李春培
GeoGebra
New Resources
錐體建築師
四邉形 (四年級) 教師版
三位數除以一位數（一）
球体的体积推导
找出對稱軸
Discover Resources
賺賠：例1
abcd
定周长的正多边形面积变化规律（含圆）
ghk99a29 扇形旋轉
內心
Discover Topics
Vectors 3D (Three-Dimensional)
Root
Matrices
Curve Sketching
Random Variables