Предмет: Геометрия, автор: lizevery

6. В треугольнике ДАВС внешние углы при вершинах АиС равны 76 и 144 градусов. Найти внутренние углы при каждой вершине треугольника.
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osamudazaj2358: Разве в треугольнике 4 углы?)

lizevery: нет это∆

lizevery: ∆АВС там ошибка

Ответы

Автор ответа: osamudazaj2358

А(внешняя)= 104°
В(внутреняя)=60°
В(внешняя)=120°
С(внешняя)=104°

С (внешняя)= 180°-76°
С (внешняя)= 104°
А (внешняя)= 180°-144°
А (внешняя)= 36°
В (внутреняя)= 180°-(144°+76°) (180°-120°)
В (внешняя)= 180°-60°
В (внешняя)= 120°

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