Mathematics
Junior High
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求解，謝謝🙏
6.平行四邊形ABCD中,E點在BC上,今以
DE 為摺線將C點向上摺,使得C點與AD A
上的F點重合,如圖(十)所示。若AB=6,
AD=8,則BE:EF=?
(A) 1:3
A F
20
D
BE
C
圖(十)
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