Задание 1.

а) < ABC = 40°

б) < MNK = 105°

в) < XYZ = 140°

г) < XYZ = 20°

Задание 2.

< AOB = 180°

< AOD = 50°

< BOC = 36°

< BOE = 90°

< AOK = 125°

< DOE = 40°

< KOC = 20°

< COD = 94°