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Drag the red dots, see the area ratio of EHFG to ABCD
Author:
johnmayhk
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
三位數除以一位數(一)
sanjiaohanshu
Discover Resources
祖恒原理
Floor plan area
GeoGebra作圖─RHS全等
sinα + sinβ > 0 ?
包含除法(整數或分數 ÷ 分數)