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In the figure,quadrilaterals ABCD and AEFG are similar.If AB:BE =2:1 and EF = 6cm, Find BC.
圖形題,英文,10分
2012-08-15 10:12 am
回答 (2)
2012-08-15 10:31 am
✔ 最佳答案
Quadrilaterals ABCD and AEFG are similar.AB/AE = BC/EF (corr. sides of similar figures)
AB/(AB + BE) = BC/EF
2/(2 + 1) = BC/(6 cm)
3 x BC = 12 cm
BC = 4 cm
參考: 胡雪
2012-08-16 12:32 am
AB:BE=2:1, so AB:AE=2:3
since ABCD and AEFG are similar
so BC:EF=AB:AE=2:3
BC=EF*2/3=4cm
since ABCD and AEFG are similar
so BC:EF=AB:AE=2:3
BC=EF*2/3=4cm
收錄日期: 2021-04-13 18:54:50
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