Daca masurile unghiurilor sunt x si y, atunci x+y=180 (1) si
[tex]\dfrac xy=\dfrac{\dfrac{36-3}{90}}{\dfrac{63-6}{90}}\Rightarrow\dfrac xy=\dfrac{33}{57}\Rightarrow \dfrac{x}{33}=\dfrac{y}{57}=\dfrac{x+y}{33+57}=\dfrac{180}{90}=2\Rightarrow [/tex]
[tex]\Rightarrow x=2y[/tex] si inlocuind in (1) avem 2y+y=180⇒y=60; x=120 (grade)
