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perimeter of rectangle
Author:
chh127245
,
Duane Habecker
perimeter of rectangle
GeoGebra
New Resources
兩位數除以一位數（一）
算柱 (兩位數)
画直线等分三角形的面积
畫出對稱圖形
錐體建築師
Discover Resources
弧度
異分母的分數加減
與三個半圓相切的圓
圆在多边形上滚动
太陽系
Discover Topics
Diagrams
Natural Numbers
Plane Figures or Shapes
Congruence
Sphere