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Drag the red dots, see the area ratio of EHFG to ABCD
Author:
johnmayhk
GeoGebra
New Resources
判斷球體
拼砌四邊形
異分母分數減法
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
Discover Resources
梯形中線
正弦定理
線段前後分割
圓與兩平行切線
西瓦定理
Discover Topics
Matrices
Tangent Function
Pyramid
Conic Sections
Binomial Distribution