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Author:
Lin Ching Chieh
GeoGebra
New Resources
兩位數除以一位數（一）
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
第八周作业
找出對稱軸
Discover Resources
Three-phase electric power
三角形
比較角的大小一
巧算周界
基础知识
Discover Topics
Cylinder
Quadratic Equations
Angles
Means
Median Line