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光折射
Author:
kevin20020905
GeoGebra
New Resources
柱體建築師
三位數除以一位數（二）
球體建築師
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
Discover Resources
Reflectional Symmetry 反射對稱
面外一點
Rolling Circle
tetrahedron_refection
直方圖_Demo的副本
Discover Topics
Pie Chart or Circle Chart
Planes
Arithmetic Mean
Random Variables
Matrices