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正多邊形各邊中點連線所圍成的圖形
Author:
Jimmy Ma
GeoGebra
New Resources
四邉形 (四年級) 教師版
錐體建築師
GeoGebra笔记功能体验课件
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
Discover Resources
解數學題目
定義篇
Ex (SSS)
平面几何问题
玖数小学数学
Discover Topics
Translation
Set Theory
Vectors 3D (Three-Dimensional)
Frequency Distribution
Integers