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Drag the red dots, see the area ratio of EHFG to ABCD
Author:
johnmayhk
GeoGebra
New Resources
兩位數除以一位數（一）
三位數除以一位數（二）
拼砌四邊形
画直线等分三角形的面积
三位數除以一位數（一）
Discover Resources
整數的加法
幾何鋪磚
不可能系列-滾球
圖解畢氏定理
标题
Discover Topics
Bar Chart or Bar Graph
Trigonometric Functions
Geometry
Special Points
Plane Figures or Shapes