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周界和面積
Author:
Tse Sir
GeoGebra
New Resources
拼砌四邊形
算柱 (兩位數)
GeoGebra笔记功能体验课件
兩位數加法
四邊形的特性
Discover Resources
微積分
交錯弓形的圓周角
镂空菱形六十面体
線性變換矩陣（二階）的副本
多点联动
Discover Topics
Statistics
Geometry
Ellipse
Cuboid
Logarithm