Question

Triangle LMN is congruent to triangle FGH, as shown.

Answer 1

Answer: 5

Step-by-step explanation:

If $\triangle LMN \cong \triangle FGH$, this means that $\overline{LM} \cong \overline{FG}$ by CPCTC.

Using the distance formula,

$FG=\sqrt{(-3-0)^{2}+(-4-0)^{2}}=5\\\\\therefore LM=\boxed{5}$