Question

PO Triangle ABC is similar to triangular DEF. What is the value of x?

Answer 1

If triangle ABC is similar to DEF then the ratio between the sides will be a constant so we can get the expression:

$\frac{15}{30}=\frac{x}{36}$

and we solve for x so:

$\begin{gathered} x=\frac{36\cdot15}{30} \\ x=18 \end{gathered}$