Question

va rog sa ma ajutați, mersi anticipat​

Answer 1

Răspuns:

Explicație pas cu pas:

AC/DE=BC/EF=AB/DF=1,(3)

AC/DE=4/3=1,(3)

BC/EF=5/3,75=1,(3)

AB/DF=3/2,25=1,(3)

Answer 2

$\it AB<AC<BC\\ \\ DF<DE<EF\\ \\ \left.\begin{aligned}\it \dfrac{AB}{DF}=\dfrac{^{4)}3}{\ 2,25}=\dfrac{\ 12^{(3}}{9}=\dfrac{4}{3}\\ \\ \\ \it \dfrac{AC}{DE}=\dfrac{4}{3}.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ .\\ \\ \\ \it\dfrac{BC}{EF}=\dfrac{^{4)}5}{\ 3,75}=\dfrac{\ 20^{(5}}{15}=\dfrac{4}{3}\end{aligned}\right\}\ \Rightarrow \dfrac{AB}{DF}=\dfrac{AC}{DE}=\dfrac{BC}{EF}$