Question

Ajutați-mă vă rog, urgent

Answer 1

$\it DE||BC \stackrel{T.f.a}{\Longrightarrow} \Delta ADE\sim\Delta ABC \Rightarrow \dfrac{AD}{AB}=\dfrac{AE}{AC} \Rightarrow \dfrac{2,4}{6}=\dfrac{AE}{12} \Rightarrow\\ \\ \\ \Rightarrow AE = \dfrac{12\cdot2,4}{6}=2\cdot2,4=4,8\ cm\\ \\ \\ CE = AC+AE= 12+4,8=16,8\ cm$