If ∆ABC EDF and ABC is not similar to DEF, then which of the following is not true?


We know that, sides of one triangle are proportional to the side of the other triangle, and then their corresponding angles are also equal, so by SSS similarity, triangles are similar.

∆ABC EDF


AB/ED = BC/DF = AC/EF


(By similarity property)



Taking first two terms, we get


AB/ED = BC/DF


AB.DF = ED.BC


So, option (d) is true


Taking last two terms, we get


BC/DF = AC/EF


BC.EF = AC.DF


So, option (A) is true


Taking first and last terms, we get,


AB/ED = AC/EF


AB.EF = ED.AC


Hence, option (b) is true.

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