ГДЗ по геометрии 7 класс Атанасян ФГОС Задание 50

\[\boxed{\mathbf{50.еуроки - ответы\ на\ пятёрку}}\]

\[\textbf{а)}\ \angle AOX = 40{^\circ};\]

\[\angle BOX = 60{^\circ};\]

\[\angle AOB = 20{^\circ};\]

\[\angle COB = 20{^\circ};\]

\[\angle DOX = 130{^\circ};\]

\[\textbf{б)}\ \angle COB = \ \angle AOB = 20{^\circ};\]

\[\textbf{в)}\ \angle AOX = \angle COA = 40{^\circ};\ \]

\[\angle AOB = \angle COB = 20{^\circ};\ \]

\[\angle DOC = \angle ZOD = 50{^\circ};\]

\[\textbf{г)}\ \angle BOA = 20{^\circ};\ \]

\[\angle COA = 40{^\circ};\ \]

\[\angle DOA = 90{^\circ};\ \]

\[\angle ZOA = 140{^\circ}.\]