zad 1. oblicz miarę a i b proszę o pomoc!!!!

[tex]\alpha=360^{\circ}-242^{\circ}\\\boxed{\alpha=118^{\circ}}\\\\\beta=180^{\circ}-(31^{\circ}+118^{\circ})\\\beta=180^{\circ}-149^{\circ}\\\boxed{\beta=31^{\circ}}[/tex]