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perimeter
Author:
Yvonne Fung
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
球體建築師
画直线等分三角形的面积
兩組對邊相等的四邊形
兩位數加法
錐體建築師
Discover Resources
雙曲線
錐體建築師 5
因式分解(十字相乘法)
包含除法（1 ÷分數）的副本
圆周展开
Discover Topics
Arithmetic Operations
Random Variables
Median Value
Circumcircle or Circumscribed Circle
Trapezoid