Предмет: Математика, автор: were1531

На рисунке прямые a и b параллельны,BD-бессектриса угла ABC.
Найдите градусную меру угла 1
Найдите градусную меру угла 2
Найдите градусную меру угла 3
СРОЧНО НАДО!!!

Приложения:

Ответы

Автор ответа: anaitsasha
3

Ответ:

115°;65°;50°

Пошаговое объяснение:

<ABC=130°(ВЕРТИКАЛЬНЫЕ < и)

<ABD=<DBC=130/2=65°

<1+<ABD=180°(ОДНОСТОРОННИЕ <и).

<1=180°-65°=115°;

<2=<ABD=65°(вертикальные <и)

<3=180-<2-<DBC=50°

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