MATHS""20FUN

2007-11-05 1:40 am
Maths"20FUN RATIO(2)


1) In the figure, ABCD is a rectangle, and E is a point on AD. Find the ratio of area of triangle BCE: area of ABCD.

回答 (2)

2007-11-05 1:48 am
✔ 最佳答案
the ratio of area of triangle BCE: area of ABCD.
BCE:ABCD =1:2
你可以設ab為y啦..ad為z..咁bc係z...dc係y
abcd個aera:=yz
bce個aera=zy/2
so BCE/ABCD =(zy/2)/yz
BCE:ABCD =1:2
2007-11-05 1:57 am
個答案是1:1
因為你試下把E的個條線畫下來。你就會found thatAEB=EBX
XEC=DCE
唔信你自已試下!
參考: me


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