Q5 of 186 Page 274

If ΔABC ~ ΔDEF such that 2AB = DE and BC = 6 cm, find EF.

Given: ∆ABC ∼ ∆DEF

2AB = DE ……….(i)


BC = 6 cm


To find: EF


∵ ∆ABC ∼ ∆DEF


∴ Ratio of all the corresponding sides of ∆ ABC and ∆ DEF are equal.



……….(ii)


Also, from (i), we have


2AB = DE


……….(iii)


[By (ii) and (iii)]



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