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Drag the red dots, see the area ratio of EHFG to ABCD
Author:
johnmayhk
GeoGebra
New Resources
算柱 (兩位數)
找出對稱軸
兩組對邊相等的四邊形
兩位數除以一位數（二）
兩位數除以一位數（一）
Discover Resources
conjugate
abc731797
圖形拼砌
平行四邊形
椭圆的一种画法.许兴华数学
Discover Topics
Square
Similarity Transformation or Similarity
Rhombus
Sequences and Series
Polygons