Контрольные задания > Как найти x для задачи 5?

Вопрос:

Как найти x для задачи 5?

Ответ:

CM — биссектриса, делит угол ∠ACD пополам. Угол ∠ACD = 62°, значит углы ∠ACM и ∠MCD равны 62 / 2 = 31°. Следовательно, x = 31°.

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