Respuesta :

Given -

△ABC ∼ △DEF

To find -

the value of x.

Solution -

If △ABC ∼ △DEF then,

[tex]\frac{AB}{DE} =\frac{BC}{EF}[/tex]

➡ [tex]x=\frac{\cancel{12}^4}{\cancel{3}_1}\times2[/tex]

➡ [tex]x=4\times2[/tex]

➡ [tex]x=8[/tex]

Hence, the value of x is equal to 8.