Предмет: Геометрия, автор: neisv777

СРОЧНО!!!
В1)В треугольнике ABC AD — биссектриса, угол C равен 40 °, угол BAD равен 24 °. Найдите угол ADB. Ответ дайте в градусах

В2) В треугольнике ABC угол A равен 50 °, внешний угол при вершине B равен 106 °. Найдите угол C.

СРОЧНОО ПОМОГИТЕ
заранее спасибо

Ответы

Автор ответа: cherryjuice26

Ответ:

B1) 64°

B2) 56°

Объяснение:

B1) Тк AD- биссектриса ( делит угол на 2 равных), то угол DAC= 24. Угол BDA- внешний для треугольника ADC (будет равен сумме двух несмежных с ним углов). BDA= 40+24=64

B2) Тк внешний угол при вершине B=106, то он будет равен двум внутренним несмежным с ним углам. Угол C=106-50=56

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