救我

orb

若A是FC中間
B是AE中間
△BCD = 6cm square
口FCED= ?

998877

還有没有提示

orb

Not IQ question

998877

Originally posted by eeEric at 2005-2-5 05:47 PM:
Not IQ question

我想問還有没有資料

抹茶可樂

Join AD
Extend CBG such that G is a point at DE
Join AG as well

ACEG is a rectangle and G is a mid-point at DE

Then AFD~GEC(SAS)

AD//CG

Area of ABC = Area of BCD
Area of 2ABC = Area of ACE
Area of 4ACE = Area of FCED

Area of ABC = 48 cm^2