$\dfrac{MK}{MN}=\dfrac{2}{6}=\dfrac{1}{3}\\\dfrac{MQ}{MP}=\dfrac{8}{24}=\dfrac{1}{3}\\→\dfrac{MK}{MN}=\dfrac{MQ}{MP}\bigg(=\dfrac{1}{3}\bigg)\\ \text{Xét} \, ΔMKQ\, \text{và}\, ΔMNP:\\\dfrac{MK}{MN}=\dfrac{MQ}{MP}\\ \widehat{M}:\text{chung}\\→ΔMKQ\backsim ΔMNP(c-g-c)$