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正十二面體
Author:
huang910316
GeoGebra
New Resources
球體建築師
球体的体积推导（优化版）
柱體建築師
拼砌四邊形
算柱 (兩位數)
Discover Resources
Area of Trapezium
整數的加法
DSE
數線上的有理數
國旗
Discover Topics
Straight Lines
Equations
Integers
Root
General Quadrilateral