Предмет: Алгебра, автор: Аноним

помогите ещё 100 балов!!!!

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Автор ответа: ilyavaisfeld

Ответ:

Объяснение:

так как угол 1 + угол 2 = 180 градусов, то угол 1, равен 180 градусов - угол два, (линия с = 180 градусам, что составляет не известный угол и угол 2) раз неизвестный угол (на одной линии с со 2 углом) равен 180 (градусы прямой с) минус угол 2, а угол 1 равен так же 180 градусов минус угол 2, ( уже дано), тогда неизвестный угол и угол 1 равны, и по признаку поперечных углов прямые Е и С паралельны, (признак поперечных углов)

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