Odpowiedź:
[tex] \alpha , \: \beta - katy \: przylegle[/tex]
[tex] \alpha = 8 \beta [/tex]
[tex] \alpha + \beta = 180° \\ 8 \beta + \beta = 180° \\ 9 \beta = 180° \: \: \: | \div 9 \\ \beta = 20°[/tex]
[tex] \alpha = 8 \beta = 8 \times 20° = 160°[/tex]
