Question

What is x the missing side length in triangle DEF

Answer 1

x = 9.75

Explanation:

We know that Triangle ABC and DEF are congruent, therefore;

`(CB)/(FE) = (AB)/(DE)`

`(12)/(9 )=(13)/(x)`

=> 12*x = 9*13

=> 12x = 117

=> x = 117 / 12

=> x = 9.75

Hope this helps!