Question

AFLATI MASURILE UNGHIURILOR. UNUI TRIUNGHI STIIND CA SUNT DIRECT PROPORTIONALE CU NUMERELE 3,5,7

Answer 1

A=3K B=5K C=7K   A+B+C=180GRADE   15K=180 K=12  A=36GRADE B=60 GRADE C=84GRADE

Answer 2

[tex] \frac{x}{3}= \frac{y}{5}= \frac{7}{z}=k \\ adica \\ x=3k;y=5k;z=7k \\ 3k+5k+7k=180 \\ 15k=180 \\ k=12 \\ deci, \\ x=3*12=36 \\ y=5*12=60 \\ z=7*12=84 [/tex]