∠AOE=180°
∠AOE=∠AOB+∠BOD+∠DOE=15°+135°+∠DOE=180°⇒
∠DOE=180°-150°=30°
(x-9)°=30°; x-9=30⇒x=39
Ответ: x=39
DOE=30°
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∠AOE=180°
∠AOE=∠AOB+∠BOD+∠DOE=15°+135°+∠DOE=180°⇒
∠DOE=180°-150°=30°
(x-9)°=30°; x-9=30⇒x=39
Ответ: x=39
DOE=30°