如圖,在▱ABCD中,E為CD上一點,連線AE、BD,且AE、BD交於點F,若EF:AF=2:5,則S△DEF...
問題詳情:如圖,在▱ABCD中,E為CD上一點,連線AE、BD,且AE、BD交於點F,若EF:AF=2:5,則S△DEF:S四邊形EFBC為( ) A.2:5 B.4:25 C.4:31 ...
問題詳情:如圖,在▱ABCD中,E為CD上一點,連線AE、BD,且AE、BD交於點F,若EF:AF=2:5,則S△DEF:S四邊形EFBC為( ) A.2:5 B.4:25 C.4:31 ...