Предмет: Геометрия, автор: horosija17

Розв'яжіть задачу за рисунком, якщо точка О центр вписаного кола трикутника ABC знайдіть кут ACB якщо кут AOB=140°

Ответы

Автор ответа: milanashynkarenko

Ответ:

1)АО і СО бісектриси.

кут а додати кут с =180-140=40

кут аос =180-40/20=160

2)кут а додати кут с =2*(180-130)=100

кут АВС= 180-100=80

Объяснение:

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