Please help with this simple question:
https://www.sendspace.com/file/wy7d2d
F3 Math Question?
2017-12-01 12:51 am
回答 (1)
2017-12-01 7:53 am
✔ 最佳答案
draw a line DG parallels to BE and intersect AC on G point, so DG=BE/2, DG:EF=3:2 ---> EF=(2/3)DG ---> EF=BE/3
the same rule applies, DF=AD/3
triangle ABE=triangle ABD = triangle ABC /2
so triangle AEF = triangle BDF = triangle ABC /6 ......Ans: (A)
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